The list below shows all the plants for which I've included seed-starting
information. I'll be adding more as I have time and I gain experience (ongoing!).
You can click on the botanical name of any plant to get to the plant information
page, which includes the germination information (as well as pictures, links to
web resources, etc.) Click on any of the first three column
headings to order the list according to that column.
For some plants, I have more detailed information about actual seed-starting
trials, often for multiple years, with notes on seed viability with age, etc.
These plants have a check-mark in the "Details" column.
| Botanical name |
Common name |
Category |
Details |
Tulipa sylvestris |
| perennial bulb (Z5-9) |  |
| Phlomis samia |
| perennial | |
| Asyneuma limonifolium |
| perennial | |
| Codonopsis vinciflora |
| perennial | |
| Adenophora subulata |
| perennial | |
| Potentilla porphyrantha |
| perennial | |
| Alyssum stribrnyi |
| perennial (Z7) | |
| Ligularia calthifolia |
| perennial | |
| Rheum moorcroftianum |
| | |
| Anticlea elegans |
| perennial | |
| Freesia leichtlinii |
| perennial (Z9-11) | |
| Dierama erectum |
| perennial bulb (Z9-11) | |
| Bukiniczia cabulica |
| biennial (Z5-9) | |
| Erigeron vetensis |
| perennial | |
| Delphinium pylzowii |
| perennial | |
| Thlaspi kerneri |
| | |
| Draba sakuraii |
| perennial | |
| Albuca osmynella |
| perennial | |
| Dahlia 'Jazz' and 'Bishop of Llandaff' |
| tender perennial | |
| Lychnis kiusiana |
| perennial | |
| Delphinium cashmerianum |
| perennial | |
| Watsonia vanderspuyae |
| perennial (Z9-11) | |
| Campanula raineri |
| perennial | |
| Roscoea auriculata |
| perennial (Z7-9) | |
| Draba athoa |
| perennial | |
| Polemonium pauciflorum |
| perennial (Z3-7) | |
| Bergeranthus vespertinus |
| perennial (Z7) | |
| Rhaponticum coniferum |
| | |
| Lutzia cretica |
| perennial | |
| Onosma sorgerae ssp. sorgerae |
| | |
| Townsendia rothrockii |
| perennial? | |
| Nothoscordum andinum |
| perennial (tender?) | |
| Albuca shawii |
| perennial (Z7-11) | |
| Dianthus japonicus |
| biennial? | |
| Silene keiskei |
| perennial | |
| Lilium lankongense |
| perennial | |
| Campanula anomala |
| perennial | |
| Sedum ewersii |
| perennial (Z5-9) | |
| Campanula rhomboidalis |
| perennial | |
| Campanula sarmatica |
| perennial | |
| Salvia stenophylla |
| | |
| Astilboides tabularis |
| perennial (Z4-7) | |
| Salvia leucantha |
| tender perennial (Z8-11) | |
| Petrocoptis pyrenaica ssp. glaucifolia |
| perennial | |
| Agave x parryantha |
| perennial (Z8-10) | |
| Albuca 'Dwarf Hardy' |
| perennial | |
| Arisaema erubescens |
| perennial (Z6-9) | |
| Ballota hispanica |
| | |
| Geissorhiza erosa |
| perennial | |
| Cotula hispida |
| perennial | |
| Asyneuma virgatum |
| perennial | |
| Salvia napifolia |
| perennial (Z6-10) | |
| Incarvillea olgae |
| perennial (Z6) | |
| Crocosmia aurea |
| perennial (Z?) | |
| Tigridia vanhouttei |
| perennial | |
| Boenninghausenia albiflora |
| shrub (Z7) | |
| Aloe cryptopoda |
| perennial (Z9-10) | |
| Veronica bellidioides |
| | |
| Gypsophila tenuifolia |
| perennial | |
| Pontechium maculatum |
| biennial/perennial | |
| Hesperoxiphion peruvianum |
| perennial | |
| Pelargonium aridum |
| perennial (Z11) | |
| Primula poissonii |
| perennial | |
| Ligularia japonica |
| perennial (Z4-7) | |
| Nicotiana glutinosa |
| tender perennial (Z9-11) | |
| Chrysanthemum weyrichii |
| perennial | |
| Codonopsis mollis |
| perennial (Z7?) | |
| Ursinia nana |
| annual | |
| Scutellaria hypericifolia |
| perennial | |
| Lychnis ajanensis |
| perennial | |
| Berkheya purpurea |
| perennial (Z8-10) | |
| Campanula zangezura |
| perennial (Z5-9) | |
| Daphne retusa |
| shrub (Z6-9) | |
| Freesia alba |
| perennial (Z8b-10) | |
| Melittis melissophyllum 'Royal Velvet Distinction' |
| perennial (Z5-9) | |
| Ligularia veitchiana |
| perennial | |
| Puya mirabilis |
| perennial (Z9-11) | |
| Clematis integrifolia |
| shrub (Z3-7) | |
| Edraianthus parnassicus |
| perennial | |
| Aethionema thomasianum |
| perennial | |
| Cyananthus microphyllus |
| perennial | |
| Gazania krebsiana |
| perennial (Z6-9) | |
| Cyclamen coum |
| perennial (Z6-9) | |
| Dianthus x roysii |
| perennial | |
| Incarvillea younghusbandii |
| | |
| Lysimachia minoricensis |
| perennial? | |
| Astragalus angustifolius |
| perennial/shrub | |
| Dianthus giganteus |
| perennial | |
| Petrocallis pyrenaica |
| perennial | |
| Dipcadi viride |
| tender perennial | |
| Geranium bohemicum |
| annual | |
| Primula capitata v. mooreana |
| perennial (Z5) | |
| Gladiolus dalenii |
| perennial | |
| Allium vineale 'Hair' |
| perennial | |
| Manfreda undulata 'Cherry Chocolate Chip' |
| perennial (Z7b-9) | |
| Allium daghestanicum |
| perennial | |
| Periploca laevigata |
| | |
| Dipcadi serotinum |
| perennial | |
| Geranium argenteum |
| perennial | |
| Symphyandra pendula |
| perennial (Z6-9) | |
| Agave univittata |
| perennial | |
| Campanula rigidipila |
| perennial | |
| Viola jooi |
| perennial (Z5-10) | |
| Salvia jurisicii |
| perennial (Z6-9) | |
| Papaver alboroseum |
| perennial | |
| Oenothera versicolor 'Sunset Boulevard' |
| perennial (Z4-10) | |
| Petunia exserta |
| tender perennial (Z9b-11) | |
| Papaver lisae |
| | |
| Hesperantha huttonii |
| perennial (Z7) | |
| Eritrichium sibiricum |
| | |
| Hosta tardiflora |
| perennial (Z4-9) | |
| Ligularia fischeri |
| perennial (Z5) | |
| Geranium clarkei 'Kashmir White' |
| perennial (Z5) | |
| Dicentra torulosa |
| annual vine | |
| Primula beesiana |
| perennial | |
| Raffenaldia primuloides |
| perennial (Z6) | |
| Chaenorhinum villosum |
| perennial | |
| Alyssum oxycarpum |
| perennial | |
| Montiopsis umbellata |
| perennial (Z7) | |
| Veronica pinnata 'Blue Feathers' |
| perennial (Z3) | |
| Phyteuma vagneri |
| perennial | |
| Allium carolinianum |
| perennial | |
| Delphinium likiangense |
| perennial (Z7-9) | |
| Achillea ptarmica 'The Pearl' |
| perennial (Z3-9) | |
| Filipendula camtschatica |
| perennial (Z4) | |
| Gloriosa modesta |
| perennial (Z9-11) | |
| Dicranostigma franchetianum 'Aristocrat' |
| | |
| Carlina corymbosa |
| perennial | |
| Salvia indica |
| perennial | |
| Dianthus pinifolius |
| perennial | |
| Rodgersia podophylla |
| perennial (Z3) | |
| Cyclamen cilicium |
| perennial (Z5-8) | |
| Silene pusilla |
| perennial | |
| Acantholimon saxifragiforme |
| perennial | |
| Morina afghanica |
| perennial | |
| Isodon excisus |
| perennial | |
| Serratula seoanei |
| perennial (Z7-10) | |
| Allium macranthum |
| perennial | |
| Pelargonium quercetorum |
| perennial | |
| Agave x pseudoferox 'Bellville' |
| perennial (Z7b-10) | |
| Ursinia anethoides |
| annual | |
| Campanula makaschvilii |
| perennial | |
| Clarkia pulchella |
| annual | |
| Salvia moorcroftiana x indica 'Shangri-La' |
| perennial (Z7b) | |
| Cyclamen hederifolium |
| perennial (Z4) | |
| Lathyrus rotundifolius |
| perennial (Z5-11) | |
| Gaura lindheimeri |
| perennial (Z5-10) | |
| Salvia hians |
| perennial | |
| Peltoboykinia watanabei |
| perennial | |
| Incarvillea sinensis 'Cheron' |
| annual | |
| Draba dedeana |
| perennial | |
| Cyclamen graecum |
| perennial (zone 7, maybe 6) | |
| Agrostemma gracilis |
| annual | |
| Mirabilis viscosa |
| annual | |
| Dianthus turkestanicus |
| perennial | |
| Hesperantha baurii |
| perennial | |
| Scorzonera suberosa ssp. cariensis |
| perennial | |
| Aralia cordata? |
| | |
| Impatiens scabrida |
| annual | |
| Oxypetalum coeruleum |
| tender perennial (Z8-10) | |
| Primula deflexa |
| perennial | |
| Phyteuma charmelii |
| perennial | |
| Symphyotrichum sp. |
| perennial | |
| Freesia laxa 'Joan Evans' |
| perennial (Z8-10) | |
| Globularia nudicaulis |
| perennial | |
| Pasithea caerulea |
| perennial | |
| Silene colorata |
| annual | |
| Lewisia leeana |
| perennial | |
| Draba condensata |
| perennial | |
| Impatiens auricoma 'Jungle Gold' |
| tender perennial | |
| Calceolaria mexicana |
| annual | |
| Wikstroemia trichotoma |
| shrub | |
| Campanula patula |
| biennial/perennial | |
| Chasmatophyllum musculinum |
| perennial (Z9-11) | |
| Campanula collina |
| perennial | |
| Corydalis ophiocarpa |
| perennial (Z5-8) | |
| Prunella hyssopifolia |
| ? | |
| Agave chrysantha |
| perennial (Z7-10) | |
| Acantholimon caryophyllaceum ssp. caryophyllaceum |
| perennial (Z6) | |
| Arenaria 'Blue Cascade' |
| perennial | |
| Salvia transsilvanica |
| perennial (Z4-7) | |
| Albuca humilis |
| perennial bulb (Z9) | |
| Cortusa matthioli subsp. altaica |
| perennial (Z4) | |
| Potentilla argyrophylla |
| perennial | |
| Dierama reynoldsii |
| perennial (Z8-10) | |
| Digitalis fontanesii |
| perennial | |
| Mertensia simplicissima |
| perennial (Z6-8) | |
| Andryala agardhii |
| perennial (Z4) | |
| Ptilotrichum spinosum |
| perennial | |
| Agave bracteosa |
| perennial (Z8-10) | |
| Sisymbrium luteum |
| perennial (Z4-8) | |
| Salvia flava var. megalantha |
| perennial | |
| Draba lasiocarpa var. compacta |
| perennial (Z6) | |
| Dianthus knappii |
| perennial | |
| Codonopsis species |
| perennial | |
| Amsonia tomentosa var. stenophylla |
| perennial | |
| Allium humile |
| perennial bulb | |
| Limonium virgatum ssp. dictyocladum |
| perennial | |
| Pterocephalus pinardii |
| perennial | |
| Blumenbachia hieronymi |
| | |
| Crocosmia x crocosmiiflora |
| perennial (Z6-9) | |
| Primula frondosa |
| perennial | |
| Ramonda myconi |
| perennial | |
| Rosularia globulariifolia |
| perennial | |
| Coluteocarpus vesicaria |
| perennial | |
| Silene zawadzkii |
| perennial | |
| Freesia grandiflora |
| perennial | |
| Ceratotheca triloba |
African foxglove | annual | |
| Salvia algeriensis |
Algerian sage | annual | |
| Aster alpinus |
alpine aster | perennial (Z2-9) | |
| Erinus alpinus |
alpine balsam | perennial (Z4-10) | |
| Cortusa matthioli |
alpine bells | perennial | |
| Lesquerella alpina |
alpine bladderpod | perennial | |
| Silene alpestris |
alpine campion | perennial (Z5-8) | |
| Heterotheca pumila |
alpine false goldenaster | perennial | |
| Thalictrum alpinum |
alpine meadow rue | perennial | |
| Cerastium alpinum ssp. lanatum |
alpine mouse ears | perennial (Z3-9) | |
| Amaranthus hybrids |
amaranth | annual | |
| Amphicarpaea bracteata |
American hog peanut | perennial (Z5) | |
| Phytolacca americana |
American pokeweed; poke sallat | perennial (Z2-11) | |
| Hemerocallis middendorffii |
Amur daylily | perennial (Z4-8) | |
| Dianthus amurensis 'Siberian Blues' |
Amur pink | perennial | |
| Bauhinia lunarioides |
Anacacho orchid | tree (Z8-11) | |
| Dianthus anatolicus |
Anatolian pink | perennial (Z6-10) | |
| Dierama igneum |
angel's fishing rod, fairy wands | perennial (Z7-10) | |
| Datura |
angel's trumpet | annual/tender perennial | |
| Mirabilis longiflora |
angel's trumpets | perennial (Z7-10) | |
| Agastache pallidiflora var. neomexicana |
anise hyssop | tender perennial (Z8) | |
| Leonotis nepetifolia |
annual lion's tail | annual | |
| Phlox drummondii 'Phlox of Sheep' |
annual phlox | annual | |
| Bidens ferulifolia |
Apache beggarticks | annual/tender perennial | |
| Fallugia paradoxa |
apache plume | shrub (Z6-10) | |
| Polemonium carneum |
apricot jacob's ladder | perennial | |
| Habranthus robustus |
Argentine rain lily | perennial (Z8-10) | |
| Physaria arizonica |
Arizona bladderpod | perennial | |
| Aquilegia desertorum |
Arizona columbine | perennial (Z5-8) | |
| Lychnis x arkwrightii 'Vesuvius' |
Arkwright's campion | perennial/biennial (Z3-10) | |
| Crotalaria sagittalis |
arrowhead rattlebox | | |
| Codonopsis clematidea |
Asian bellflower | perennial (Z4) | |
| Trollius asiaticus |
Asian globeflower | perennial | |
| Asparagus officinalis |
asparagus | perennial | |
| Papaver atlanticum 'Semiplenum' |
Atlas poppy | perennial (Z5-9) | |
| Malva preissiana |
Australian hollyhock | | |
| Salvia greggii |
autumn sage | perennial (Z7-10) | |
| Acis autumnalis |
autumn snowflake | perennial bulb (Z6-9) | |
| Prospero autumnale |
autumn squill | perennial (Z5-8) | |
| Geum chiloense |
avens | perennial | |
| Geum ponticum |
avens | perennial | |
| Salvia azurea |
azure sage | perennial (Z5-9) | |
| Sedum caeruleum |
azure stonecrop | annual | |
| Babiana tubulosa |
baboonflower | perennial | |
| Nemophila menziesii 'Penny Black' |
baby blue-eyes; five-spot | annual | |
| Galvezia juncea |
Baja bush snapdragon | perennial (Z9-10) | |
| Lessertia frutescens |
balloon pea | shrub (Z9b-11) | |
| Cardiospermum halicacabum |
balloon vine, love in a puff | tender perennial (Z9-11) | |
| Platycodon grandiflorus |
balloonflower | perennial (Z3-8) | |
| Yucca baccata |
banana yucca; Spanish bayonet | perennial (Z5b-11) | |
| Marshallia caespitosa |
Barbara's buttons | annual | |
| Ocimum basilicum 'Osmin' |
basil | tender perennial | |
| Aurinia saxatilis |
basket of gold | perennial | |
| Lathyrus japonicus ssp. maritimus |
beach pea | perennial | |
| Helianthus debilis ssp. cucumerifolius |
beach sunflower; cucumber-leaved sunflower | tender perennial (Z8-11) | |
| Artemisia stelleriana |
beach wormwood; dusty miller | perennial (Z4-8) | |
| Nolina texana |
bear grass, sacahuista | perennial | |
| Acanthus mollis |
bear's breeches | perennial (Z6-9) | |
| Penstemon x mexicali 'Red Rocks' |
beardtongue | perennial (Z5-9) | |
| Kolkwitzia amabilis 'Pink Cloud' |
beautybush | shrub (Z4-8) | |
| Escobaria vivipara |
beehive cactus | perennial (Z4-11) | |
| Campanula latifolia subsp. latifolia |
bellflower | perennial | |
| Campanula incurva |
bellflower | monocarpic perennial (Z6) | |
| Moluccella laevis |
bells of Ireland | annual | |
| Dasylirion berlandieri |
Berlandier's sotol | perennial (Z7b-10) | |
| Aquilegia bertolonii |
Bertoloni's columbine | perennial (Z2-9) | |
| Andropogon gerardii |
big bluestem grass | perennial (Z3-8) | |
| Salvia pentstemonoides |
big red sage | perennial (Z6-10) | |
| Lotus corniculatus |
bird's foot trefoil | perennial | |
| Commelina dianthifolia |
birdbill dayflower | perennial (Z7?) | |
| Gilia tricolor |
birds' eyes | annual | |
| Primula farinosa |
birds-eye primrose | perennial | |
| Lewisia cotyledon |
bitter-root | perennial (Z4-8) | |
| Dalea frutescens |
black prairie clover | perennial | |
| Thunbergia alata |
black-eyed susan vine | tender perennial (Z9-10) | |
| Gaillardia grandiflora |
blanketflower | perennial | |
| Liatris spicata |
blazing star; gayfeather | perennial bulb | |
| Knautia arvensis |
blue buttons | perennial | |
| Camassia quamash |
blue camass; indian hyacinth | perennial | |
| Iris versicolor |
blue flag | perennial | |
| Linum lewisii |
blue flax | perennial | |
| Koeleria glauca |
blue hairgrass | perennial (Z6-9) | |
| Helictotrichon sempervirens |
blue oat grass | perennial | |
| Aristea capitata |
blue scepter | perennial | |
| Laurentia axillaris |
blue star creeper | ? | |
| Amsonia tabernaemontana |
blue stars | perennial | |
| Gilia capitata |
blue thimble flower | annual | |
| Trachelium jacquinii ssp. rumelianum |
blue throatwort | perennial | |
| Verbena hastata |
blue vervain | perennial (Z3-8) | |
| Cuphea viscosissima |
blue waxweed | annual | |
| Asperula orientalis |
blue woodruff | annual | |
| Phacelia bolanderi |
blue-flowered grape-leaf | perennial (Z7-10) | |
| Caryopteris x clandonensis |
bluebeard, blue mist spirea | shrub | |
| Callicarpa bodinieri var. giraldii |
Bodinier's beautyberry | shrub (Z6-8) | |
| Begonia boliviensis |
Bolivian begonia | perennial (Z7b-10) | |
| Codonopsis lanceolata |
bonnet bellflower | perennial (Z6-8) | |
| Borago officinalis |
borage | annual | |
| Elymus hystrix |
bottlebrush grass | perennial (Z5-9) | |
| Gillenia trifoliata |
bowman's root, indian physic | perennial (Z4-8) | |
| Centratherum punctatum |
Brazilian buttons | tender perennial (Z8-11) | |
| Papaver somniferum |
bread poppy; opium poppy | annual | |
| Clarkia breweri |
Brewer's clarkia | annual | |
| Francoa sonchifolia |
bridal wreath | perennial (Z7-9) | |
| Penstemon ovatus |
broad-leaved penstemon | perennial (Z3-8) | |
| Allium senescens |
broadleaf chives | perennial (Z5) | |
| Plantago major |
broadleaf plantain | perennial | |
| Linaria dalmatica |
broadleaf toadflax | perennial | |
| Rudbeckia triloba |
brown-eyed susan | biennial | |
| Solanum rostratum |
buffalo bur | annual | |
| Desmanthus illinoensis |
bundleflower; prairie mimosa | perennial (Z5-9) | |
| Knautia macedonica |
burgundy pincushion | perennial | |
| Thelesperma burridgeanum |
Burridge's greenthread | annual | |
| Lespedeza thunbergii |
bush clover | shrub (Z5-8) | |
| Diplacus grandiflorus |
bush monkeyflower | perennial (Z7-10) | |
| Browallia americana |
bush violet | annual | |
| Callirhoe bushii |
Bush's poppy mallow | perennial (Z5-8) | |
| Diplarrena moraea |
butterfly flag; white iris | perennial | |
| Lavandula stoechas ssp. pedunculata |
butterfly lavender; French lavender | tender perennial (Z8-10) | |
| Clitoria ternatea |
butterfly pea; blue pea | tender perennial (Z10-11) | |
| Asclepias tuberosa |
butterfly weed | perennial (Z4-10) | |
| Liatris pycnostachya |
button snakeroot; prairie blazing star | perennial (Z4) | |
| Cyclanthera pedata |
caigua | annual | |
| Oncosiphon suffruticosum |
Calomba daisy | annual | |
| Patrinia scabiosifolia 'Nagoya' |
camel's cover | perennial (Z5-9) | |
| Silene orientalis |
campion | perennial (Z4-8) | |
| Solidago canadensis |
Canada goldenrod | perennial | |
| Pardancanda norrisii |
candy lily | perennial (Z5-10) | |
| Arctotis fastuosa |
cape daisy, monarch of the veldt | annual or tender perennial | |
| Ipomoea sloteri |
cardinal climber | annual vine | |
| Lobelia cardinalis |
cardinal flower | perennial | |
| Calycanthus floridus |
Carolina allspice; sweetshrub | shrub (Z5-9) | |
| Thermopsis villosa |
Carolina lupine, Aaron's rod | perennial (Z3-9) | |
| Silene suksdorfii |
cascade catchfly | perennial | |
| Sedum divergens |
Cascade stonecrop | perennial (Z5-9) | |
| Silene maritima |
catchfly | perennial (Z2) | |
| Lychnis viscaria |
catchfly | perennial | |
| Silene dioica |
catchfly | perennial | |
| Lychnis wilfordii |
catchfly | perennial | |
| Lychnis fulgens |
catchfly; brilliant campion | perennial (Z4-8) | |
| Nepeta grandiflora 'Dawn to Dusk' |
catmint | perennial (Z5-8) | |
| Teucrium hyrcanicum |
Caucasian germander | perennial (Z6-9) | |
| Doronicum orientale |
caucasian leopard's bane | perennial (Z5) | |
| Salvia roemeriana |
cedar sage | tender perennial (Z7-10) | |
| Agave palmeri |
century plant | perennial (Z7-10) | |
| Agave loferox 'Stairway to Heaven' |
century plant | perennial (Z7b-10) | |
| Agave x amourifolia |
century plant | perennial (Z7b-10) | |
| Agave americana ssp. protamericana |
century plant; American aloe | perennial (Z8-11) | |
| Euphorbia dulcis 'Chameleon' |
chameleon spurge | perennial | |
| Penstemon heterophyllus |
chaparral penstemon | perennial (Z6-10) | |
| Hesperoyucca whipplei |
chaparral yucca | perennial (Z8b) | |
| Vitex negundo |
chastetree | shrub (Z6-10) | |
| Dianthus gratianopolitanus |
cheddar pink | perennial (Z3-8) | |
| Dianthus 'Spotty' |
cheddar pink | perennial | |
| Petrophytum cinerascens |
Chelan rockmat | perennial | |
| Eccremocarpus scaber |
Chilean glory flower | perennial (Z8-10) | |
| Orostachys malacophylla var. iwarenge |
Chinese dunce caps | perennial (Z5-9) | |
| Paulownia tomentosa |
Chinese empress tree | tree | |
| Cynoglossum nervosum |
Chinese forget-me-not | perennial (Z5-9) | |
| Cynoglossum amabile |
Chinese forget-me-not | annual | |
| Collinsia heterophylla |
Chinese houses | annual | |
| Scutellaria baicalensis |
Chinese skullcap | perennial | |
| Calycanthus chinensis |
Chinese sweetshrub | deciduous shrub (Z6-8) | |
| Orychophragmus violaceus |
Chinese violet cress | perennial (Z7-10) | |
| Allium schoenoprasum |
chives | perennial | |
| Mentha spicata |
chocolate mint | perennial herb | |
| Berlandiera lyrata |
chocolate-scented daisy | perennial (Z5-11) | |
| Coriandrum sativum |
cilantro; coriander | annual | |
| Potentilla nepalensis |
cinquefoil | perennial (Z3-8) | |
| Potentilla 'Monsieur Rouillard' |
cinquefoil | perennial (Z5-8) | |
| Salvia sclarea |
clary sage | biennial /perennial (Z5-9) | |
| Adlumia fungosa |
climbing fumatory | biennial vine (Z4-8) | |
| Caiophora lateritia |
climbing tingle lily | biennial | |
| Dianthus carthusianorum |
clusterhead pink | perennial (Z5) | |
| Encelia californica |
coast sunflower, California brittlebush | perennial (Z9-10) | |
| Arisaema ciliatum |
cobra lily | perennial (Z6-9) | |
| Arisaema serratum |
cobra lily | perennial (Z5-8) | |
| Arisaema candidissimum |
cobra lily | perennial (Z5-9) | |
| Cirsium occidentale |
cobweb thistle | biennial or perennial (Z7-10) | |
| Baptisia arachnifera |
cobwebby wild indigo; hairy rattleweed | perennial | |
| Solenostemon scutellarioides |
coleus | tender perennial | |
| Aquilegia coerulea |
Colorado blue columbine | perennial (Z3-8) | |
| Aquilegia vulgaris |
columbine | perennial | |
| Aquilegia 'Cap de Rositier' |
columbine | perennial | |
| Aquilegia discolor |
columbine | perennial (Z4) | |
| Matthiola incana |
common stock | annual | |
| Dipsacus fullonum |
common teasel; Fuller's teasel | biennial | |
| Silphium laciniatum |
compass plant | perennial | |
| Viola sororia f. priceana |
confederate violet | perennial (Z4-8) | |
| Habranthus tubispathus |
copper lily | perennial (Z7-10) | |
| Erythrina crista-galli |
coral bean | shrub/tree (Z9-11) | |
| Erythrina herbacea |
coral bean; Cherokee bean | tender perennial (Z8-10) | |
| Heuchera sanguinea 'June Bride' |
coral bells | perennial (Z3-8) | |
| Lilium pumilum |
coral lily | perennial bulb (Z3-10) | |
| Antigonon leptopus |
coral vine; chain of love | tender perennial (Z8-12) | |
| Albuca spiralis |
corkscrew albuca | perennial (Z9) | |
| Agrostemma githago |
corn cockle | annual | |
| Ridolfia segetum |
corn parsley, goldspray | annual | |
| Lavatera arborea |
Cornish tree mallow | annual/perennial | |
| Viola bertolonii |
Corsica violet | perennial | |
| Helleborus lividus subsp. corsicus |
Corsican hellebore | perennial | |
| Tanacetum balsamita |
costmary | perennial | |
| Dianthus plumarius |
cottage pink, garden pink | perennial (Z3-9) | |
| Vaccaria hispanica |
cow cockles; cow soapwort | annual | |
| Geranium asphodeloides |
cranesbill | perennial | |
| Geranium wallichianum 'Buxtons Variety' |
cranesbill | perennial | |
| Geranium x oxonianum 'Claridge Druce' |
cranesbill | perennial (Z4-8) | |
| Geranium endressii 'Wargrave's Pink' |
cranesbill | perennial (Z3) | |
| Geranium psilostemon |
cranesbill | perennial (Z5-8) | |
| Scabiosa ochroleuca |
cream pincushion flower | perennial (Z4-8) | |
| Alyssum montanum |
creeping basket of gold | perennial (Z2-9) | |
| Phuopsis stylosa |
creeping crosswort | perennial (Z5-10) | |
| Cotula 'Tiffindell Gold' |
creeping gold buttons | perennial (Z5-10) | |
| Sanvitalia procumbens |
creeping zinnia | annual | |
| Anoda cristata 'Opal cup' |
crested anoda | annual | |
| Gentiana septemfida |
crested gentian | perennial | |
| Anthemis cretica |
Cretian mat daisy | perennial (Z5-10) | |
| Allium kermesinum |
crimson leek; kamnik leek | perennial | |
| Gentiana cruciata |
cross gentian | perennial (Z5-9) | |
| Veronicastrum virginicum |
culver's root | perennial (Z3-8) | |
| Silphium perfoliatum |
cup plant | perennial | |
| Carex albula 'Frosty Curls' |
curly sedge | perennial (Z6-9) | |
| Erigeron compositus 'Red Desert' |
cutleaf daisy; fernleaf fleabane | perennial (Z3-8) | |
| Kalimeris incisa |
cutleaf Japanese aster | perennial | |
| Prunella laciniata |
cutleaf self-heal | perennial (Z6-9) | |
| Ipomoea quamoclit |
cypress vine | annual vine | |
| Thymophylla tenuiloba |
Dahlberg daisy | annual | |
| Hesperis matronalis |
dame's rocket | biennial | |
| Arisaema heterophyllum |
dancing crane cobra lily | perennial (Z5-9) | |
| Globba schomburgkii |
dancing ladies ginger | perennial (Z8-11) | |
| Salvia taraxacifolia |
dandelion sage | tender perennial (Z8) | |
| Aquilegia atrata |
dark columbine | perennial (Z3-8) | |
| Lilium davidii |
David's lily | perennial | |
| Manfreda maculosa |
deciduous agave | perennial (Z7-9) | |
| Dianthus armeria |
Deptford pink | biennial | |
| Phacelia campanularia |
desert bluebell | annual | |
| Caulanthus inflatus |
desert candle | annual | |
| Cassia nemophila |
desert cassia | shrub (Z7) | |
| Aquilegia shockleyi |
desert columbine | perennial (Z6-10) | |
| Succisa pratensis |
devilsbit scabious | perennial | |
| Anethum graveolens |
dill | annual | |
| Aeonium tabuliforme |
dinner-plate aeonium | perennial (Z9b-10) | |
| Scutellaria incana |
downy skullcap | perennial (Z5) | |
| Dracocephalum ruyschiana |
dragonhead | perennial (Z5-8) | |
| Dracocephalum botryoides |
dragonhead | perennial (Z4-7) | |
| Primula denticulata? |
drumstick primrose; Himalayan primrose | perennial (Z3-8) | |
| Campanula species |
dwarf blue bellflower | perennial (Z5-10) | |
| Trollius pumilus |
dwarf globeflower | perennial | |
| Aruncus aethusifolius |
dwarf goat's beard | perennial (Z3-9) | |
| Penstemon hirsutus var. pygmaeus |
dwarf hairy penstemon | perennial (Z3-9) | |
| Oxytropis multiceps |
dwarf locoweed; Nuttall's oxytrope | perennial (Z4) | |
| Thermopsis chinensis 'Sophia' |
dwarf southern lupine, pea bush | perennial | |
| Eucomis vandermerwei |
dwarf spotted pineapple lily | perennial (Z8-10) | |
| Isatis tinctoria |
dyer's woad | biennial (Z4-8) | |
| Monarda bradburiana |
eastern beebalm | perennial (Z5-8) | |
| Erigeron annuus |
Eastern daisy fleabane | annual | |
| Tripsacum dactyloides 'Emerald Scepter' |
eastern gamagrass | perennial (Z5-10) | |
| Alcea pallida |
eastern hollyhock | perennial | |
| Cercis canadensis |
Eastern redbud | tree | |
| Blumenbachia insignis |
electric shock plant | annual | |
| Amaranthus tricolor |
elephant head amaranth | annual | |
| Elephantopus carolinianus |
elephant's foot | perennial (Z4-9) | |
| Sida elliottii |
Elliott's fanpetals | perennial? | |
| Primula veris 'Sunset shades' and 'Red Strain' |
English cowslip | perennial (Z4) | |
| Haloragis erecta 'Wellington Bronze' |
erect seaberry | tender perennial | |
| Lupinus luteus |
European yellow lupine | annual | |
| Sophora affinis |
Eve's necklace; Texas sophora | shrub/tree | |
| Oenothera kunthiana |
evening primrose | perennial (Z6-10) | |
| Oenothera macrosceles |
evening primrose | | |
| Oenothera acaulis |
evening primrose | perennial (Z5-8) | |
| Matthiola longipetala ssp. bicornis |
evening scented stock | annual | |
| Agave toumeyana var. bella |
fairy ring agave; century plant | perennial (Z7-9) | |
| Dierama trichorhizum |
fairy wand | perennial (Z6b) | |
| Dierama pulcherrimum |
fairy wand; angel's fishing rod | perennial (Z7-10) | |
| Dierama robustum |
fairy wands | perennial (Z8) | |
| Allium thunbergii 'Ozawa' |
fall onion | perennial (Z4-8) | |
| Manfreda virginica |
false aloe; Virginia agave | perennial (Z6-9) | |
| Campylotropis macrocarpa |
false bush clover; Chinese pea shrub | shrub (Z5) | |
| Ledebouria 'Gary Hammer' |
false squill | perennial (Z7-10) | |
| Heliopsis helianthoides |
false sunflower | perennial | |
| Aquilegia flabellata |
fan columbine | perennial | |
| Clarkia amoena |
farewell to spring | annual | |
| Oenothera hartwegii ssp. fendleri |
Fendler's sundrops | perennial | |
| Achillea filipendulina 'Cloth of Gold' |
fern-leaf yarrow | perennial (Z3-9) | |
| Phacelia tanacetifolia |
fiddleneck | annual | |
| Cyrtanthus epiphyticus |
fire lily | perennial | |
| Ipomoea lobata |
firecracker vine; Spanish flag | tender perennial (Z8) | |
| Celosia spicata |
flamingo feather | annual | |
| Eryngium planum |
flat sea holly | perennial (Z5-9) | |
| Pelargonium carnosum |
fleshy pelargonium | shrub (Z10) | |
| Ageratum houstonianum 'Leilani Blue' |
floss flower | annual | |
| Hibiscus trionum |
flower of an hour | annual | |
| Abelmoschus manihot |
flowering okra | tender perennial (Z8-11) | |
| Nicotiana x sanderae 'Baby Bella' |
flowering tobacco | tender perennial (Z9-11) | |
| Nicotiana hybrids |
flowering tobacco | annual | |
| Nicotiana mutabilis |
flowering tobacco | perennial (Z8-10) | |
| Veltheimia bracteata |
forest lily; Cape lily | tender perennial (Z9-10) | |
| Lilium formosanum |
formosa lily | perennial bulb (Z5-8) | |
| Pennisetum orientale 'Karley Rose' |
fountain grass | perennial (Z5-7) | |
| Mirabilis jalapa |
four o'clocks | tender perennial (Z7-11) | |
| Clarkia purpurea ssp. quadrivulnera |
four-spotted purple clarkia; winecup clarkia | annual | |
| Digitalis lanata complex |
foxglove | biennial/perennial | |
| Digitalis parviflora |
foxglove | perennial (Z5) | |
| Digitalis laevigata 'Gracea' |
foxglove | biennial | |
| Eremurus 'Cleopatra' |
foxtail lily | perennial | |
| Styrax obassia |
fragrant snowbell | tree | |
| Hedysarum coronarium |
French honeysuckle | perennial/biennial (Z4-9) | |
| Tellima grandiflora |
fringe cups | perennial (Z4-8) | |
| Dianthus superbus |
fringed pink | perennial (Z3-8) | |
| Callirhoe digitata |
fringed poppy mallow | perennial (Z5-8) | |
| Ruta chalepensis |
fringed rue; Aleppo rue | perennial | |
| Fritillaria michailovskyi |
fritillary | perennial | |
| Fritillaria raddeana |
fritillary | perennial (Z4-8) | |
| Solanum scabrum |
garden huckleberry | annual | |
| Allium tuberosum |
garlic chives | perennial (Z4-8) | |
| Dictamnus albus |
gas plant | shrub | |
| Gazania hybrids |
Gazania | tender perennial | |
| Gentiana dahurica |
gentian | perennial | |
| Rudbeckia maxima |
giant coneflower | perennial | |
| Agastache pallida var. pallida |
giant hummingbird's mint | perennial (Z6-10) | |
| Agastache cana |
giant hyssop | perennial (Z5-9) | |
| Allium hyalinum |
glassy onion | perennial | |
| Gomphrena haageana 'Strawberry Fields' |
globe amaranth | annual | |
| Gomphrena globosa |
globe amaranth | annual | |
| Globularia meridionalis |
globe daisy | perennial (Z5-7) | |
| Trollius chinensis 'Golden Queen' |
globeflower | perennial | |
| Rudbeckia hirta |
gloriosa daisy; black-eyed susan | perennial (Z3-10) | |
| Galega officinalis |
goat's rue | perennial | |
| Cypella herbertii |
goblet flower | perennial (Z7-9) | |
| Melampodium paludosum 'Million Gold' |
gold medallion flower; African zinnia | annual | |
| Zizia aurea |
golden alexanders | perennial (Z3-8) | |
| Clematis tangutica |
golden clematis, Old man's beard | perennial vine (Z3-8) | |
| Tanacetum parthenium 'Aureum' |
golden feverfew | perennial | |
| Thermopsis lanceolata |
golden pea, golden banner | perennial (Z3-9) | |
| Koelreuteria paniculata |
golden rain tree | tree (Z5-9) | |
| Cephalaria gigantea |
golden scalehead | perennial | |
| Bloomeria crocea |
golden stars | perennial (Z6/7-10) | |
| Acaena saccaticupula |
goose leaf | perennial (Z6-9) | |
| Muscari armeniacum |
grape hyacinth | perennial bulb (Z3-9) | |
| Aloe cooperi |
grass aloe | perennial (Z8-10) | |
| Edraianthus tenuifolius |
grassy bells | perennial (Z5-8) | |
| Penstemon canescens |
gray beard-tongue | perennial | |
| Corynephorus canescens 'Spiky Blue' |
gray hair grass | annual | |
| Carex grayi |
Gray's sedge | perennial (Z5-9) | |
| Chelidonium majus |
great celandine | perennial | |
| Astrantia major ex 'Hadspen Blood' |
great masterwort | perennial (Z4-9) | |
| Digitalis lanata |
Grecian foxglove; woolly foxglove | perennial/biennial (Z4-9) | |
| Pinellia tripartita |
green dragon | perennial (Z5-9) | |
| Digitalis viridiflora |
green foxglove | perennial (Z6-9) | |
| Amaranthus caudatus 'Viridis' |
green tassel flower | annual | |
| Vicia villosa |
hairy vetch | annual | |
| Ruellia humilis |
hairy wild petunia | perennial (Z4-8) | |
| Begonia grandis ssp. evansiana |
hardy begonia | perennial (Z6-9) | |
| Agave lophantha |
hardy century plant | perennial | |
| Gladiolus caucasicus |
hardy gladiolus; field gladiolus | perennial (Z5-10) | |
| Incarvillea compacta |
hardy gloxinia | perennial (Z6) | |
| Incarvillea forrestii |
hardy gloxinia | perennial | |
| Incarvillea zhongdianensis |
hardy gloxinia | perennial (Z5-9) | |
| Incarvillea delavayi |
hardy gloxinia | perennial (Z6-10) | |
| Hibiscus moscheutos |
hardy hibiscus; swamp rose-mallow | perennial (Z4-9) | |
| Delosperma cooperi |
hardy ice plant | perennial (Z6-9) | |
| Salvia verticillata subsp. verticillata |
hardy ornamental sage | perennial | |
| Strobilanthes atropurpureus |
hardy persian shields | perennial (Z6-9) | |
| Antirrhinum braun-blanquetii |
hardy snapdragon | perennial | |
| Hieracium aurantiacum |
hawkweed | perennial | |
| Zizia aptera |
heart-leaved alexanders | perennial | |
| Geranium pyrenaicum |
hedgerow cranesbill | perennial (Z5-10) | |
| Digitalis trojana |
Helen of Troy foxglove | perennial (Z4-9) | |
| Helenium autumnale |
Helen's flower, sneezeweed | perennial | |
| Erodium manescavii |
heronsbill | perennial | |
| Erodium trifolium |
heronsbill | perennial (Z7-9) | |
| Alcea rosea |
hollyhock | biennial/perennial | |
| Malva alcea |
hollyhock mallow | perennial (Z3-9) | |
| Lunaria annua |
honesty; moneyplant | biennial | |
| Cerinthe major Purpurescens |
honeywort | annual | |
| Phyteuma nigrum |
horned rampion | perennial | |
| Agastache aurantiaca 'Kiowa Sunset' |
hummingbird mint | perennial (zones?) | |
| Salvia subrotunda |
hummingbird sage | annual | |
| Lablab purpureus |
hyacinth bean | tender perennial/annual | |
| Hyssopus officinalis |
hyssop | perennial | |
| Delosperma sutherlandii |
ice plant | perennial (Z6-9) | |
| Delosperma nakurense |
ice plant | | |
| Delosperma lavisiae |
ice plant | perennial (Z7-11) | |
| Sorghastrum nutans |
Indian grass | perennial (Z3-9) | |
| Lobelia inflata |
indian tobacco | annual | |
| Verbascum wiedemannianum |
indigo mullein | perennial | |
| Salvia forsskaolei |
Indigo sage | perennial (Z6-9) | |
| Sagina subulata |
Irish moss, pearlwort | perennial | |
| Aster amellus |
Italian aster | perennial (Z5-8) | |
| Campanula alliariifolia |
ivory bellflower | perennial | |
| Ipomoea hederacea |
ivy-leaf morning glory | annual | |
| Ipomoea hederifolia |
ivy-leaf morning glory | annual | |
| Ipomoea hederifolia var. lutea |
ivy-leaf morning glory | annual | |
| Arisaema sikokianum |
jack in the pulpit | perennial (Z5-9) | |
| Arisaema serratum var. mayebarae |
Jack in the pulpit | perennial (Z5-8) | |
| Polemonium caeruleum ssp. yezoense |
Jacob's ladder | perennial (Z4-8) | |
| Polemonium caeruleum 'White pearl' |
Jacob's ladder | perennial | |
| Polemonium brandegeei |
Jacob's ladder | perennial (Z4-8) | |
| Polemonium caeruleum subsp. villosum 'Blue master' |
Jacob's ladder | perennial | |
| Asphodeline lutea |
Jacob's rod | perennial (Z6-9) | |
| Callicarpa japonica |
Japanese beautyberry | shrub (Z5-8) | |
| Arisaema ringens |
Japanese cobra lily | perennial (Z5-9) | |
| Cryptotaenia japonica 'Atropurpurea' |
Japanese parsley | perennial (Z4-9) | |
| Papaver miyabeanum |
Japanese poppy | perennial (Z2-8) | |
| Leucosceptrum japonicum 'Mountain Madness' |
Japanese shrub mint | perennial (Z5-8) | |
| Styrax japonicus |
Japanese snowbell | tree (Z5-8) | |
| Cirsium japonicum 'White Frosted' |
japanese thistle | perennial (Z5-9) | |
| Phlomis tuberosa |
Jerusalem sage | perennial (Z6) | |
| Talinum paniculatum |
jewels of Opar | annual/greenhouse perennial | |
| Coix lacryma-jobi |
Job's tears | tender perennial | |
| Amsonia jonesii |
Jones' bluestar; Colorado desert blue star | perennial (Z4-9) | |
| Centranthus ruber |
Jupiter's beard | perennial | |
| Sedum kamtschaticum |
Kamtschat sedum | perennial | |
| Solanum virginianum |
kantakari; Surrattense nightshade | annual or tender perennial | |
| Sophora prostrata |
kÅwhai | shrub | |
| Allium carinatum ssp. pulchellum |
keeled garlic | perennial (Z3-9) | |
| Cymbalaria muralis |
Kenilworth ivy | perennial | |
| Gymnocladus dioicus |
Kentucky coffee tree | tree | |
| Anthyllis vulneraria var. coccinea |
kidney vetch; woundwort | perennial (Z6-10) | |
| Centaurea nigra |
knapweed | perennial | |
| Angelica gigas |
Korean angelica | biennial (Z6-8) | |
| Campanula takesimana |
Korean bellflower | perennial (Z5-8) | |
| Sanguisorba hakusanensis |
Korean burnet | perennial | |
| Calamagrostis brachytricha |
Korean feather grass | perennial (Z5-9) | |
| Viola labradorica |
Labrador violet | perennial | |
| Coreopsis verticillata 'Moonbeam' |
laceleaf coreopsis | perennial | |
| Adenophora liliifolia |
ladybells | perennial | |
| Adenophora polyantha |
ladybells | perennial | |
| Adenophora pereskiifolia |
ladybells | perennial (Z5-8) | |
| Adenophora triphylla var. japonica |
ladybells | perennial | |
| Sedum lanceolatum |
lanceleaf stonecrop | perennial (Z2) | |
| Minuartia laricifolia |
larch-leaved sandwort | perennial (Z5) | |
| Arenaria grandiflora |
large-flowered sandwort | perennial (Z5) | |
| Lupinus polyphyllus |
large-leaf lupin; garden lupin | biennial/perennial (Z4-10) | |
| Hemerocallis thunbergii |
late yellow daylily | perennial (Z5) | |
| Lavatera cachemiriana |
lavatera | perennial (Z6-9) | |
| Lavandula species |
lavender | shrubby perennial | |
| Allium tanguticum |
lavender globe lily | perennial | |
| Thalictrum rochebrunianum |
lavender mist meadow rue | perennial (Z4-7) | |
| Goniolimon incanum 'Sea Spray' |
lavender statice | perennial (Z5-9) | |
| Carex buchananii |
leatherleaf sedge | perennial (Z6-9) | |
| Eryngium leavenworthii |
Leavenworth eryngo | annual | |
| Agave lechuguilla |
lechuguilla; tula ixtle | perennial (Z7-10) | |
| Leibnitzia anandria |
Leibnitz daisy | perennial | |
| Monarda austromontana |
lemon beebalm | perennial | |
| Helleborus x hybridus |
lenten rose | perennial | |
| Agapanthus 'Headbourne Hybrids' and other hybrids |
lily of the Nile | perennial (Z6-10) | |
| Agapanthus praecox 'Dwarf Blue' |
lily of the Nile; African blue lily | perennial (Z8-10) | |
| Salvia tiliifolia |
lindenleaf sage; tarahumara chia | annual | |
| Eustoma grandiflorum |
lisianthus; prairie gentian | annual/tender perennial | |
| Antennaria microphylla |
little-leaf pussytoes | perennial (Z3-7) | |
| Aloinopsis/nananthus hybrids |
living stone | perennial | |
| Lithops karasmontana |
living stone | perennial (Z9b-11) | |
| Clianthus puniceus |
lobster claw; kaka beak | perennial (Z8-11) | |
| Oxytropis oreophila |
locoweed | perennial (Z4-7) | |
| Veronica longifolia 'Blauriesin' |
long-leaf speedwell | perennial (Z4-8) | |
| Aquilegia longissima |
longspur columbine | perennial (Z3-9) | |
| Levisticum officinale |
lovage | perennial herb | |
| Nigella damascena |
love in a mist | annual | |
| Pulmonaria officinalis |
lungwort | perennial | |
| Salvia lyrata |
lyre-leaf sage | perennial | |
| Azorina vidalii |
Madeiran bellflower | annual or short-lived perennia | |
| Silene petersonii |
Maguire campion | perennial (Z5-9) | |
| Dianthus deltoides |
maiden pink | perennial | |
| Solanum atropurpureum |
malevolence | tender perennial | |
| Malva sylvestris 'Zebrina' |
mallow pink | annual/perennial | |
| Silene chalcedonica |
Maltese cross | perennial (Z4-8) | |
| Gypsophila oldhamiana |
Manchurian baby's breath | perennial | |
| Hemerocallis multiflora |
many-flowered daylily | perennial (Z4-8) | |
| Silybum marianum |
Mary's thistle, milk thistle | biennial | |
| Oxytropis shokanbetsuensis |
mashikegenge | perennial | |
| Alonsoa warscewiczii |
mask flower | tender perennial | |
| Liatris ligulistylis |
meadow blazing star | perennial | |
| Thalictrum aquilegiifolium |
meadow rue | perennial (Z5-9) | |
| Salvia pratensis Haematodes |
meadow sage | perennial (Z3-10) | |
| Salvia farinacea |
mealycup sage | tender perennial | |
| Cuphea hyssopifolia |
Mexican heather | tender perennial (Z9-11) | |
| Agastache mexicana |
Mexican hyssop | perennial (Z7-10) | |
| Melothria scabra |
Mexican sour gherkin; mouse melon | annual | |
| Tithonia rotundifolia |
Mexican sunflower | annual | |
| Hunnemannia fumariifolia |
Mexican tulip poppy; goldencup | tender perennial (Z9-11) | |
| Tetranema roseum |
Mexican violet | tender perennial (Z10-11) | |
| Reseda odorata |
mignonette; bastard rocket | | |
| Campanula lactiflora |
milky bellflower | perennial | |
| Thelocactus setispinus |
miniature barrel cactus; hedgehog cactus | perennial (Z9-11) | |
| Elsholtzia stauntonii |
mint bush | perennial/shrub (Z4-8) | |
| Oenothera macrocarpa |
Missouri evening primrose | perennial (Z3-7) | |
| Dracocephalum moldavica |
Moldavian dragonhead | hardy annual | |
| Mimulus alatus |
monkeyflower | perennial (Z3) | |
| Mimulus lewisii |
monkeyflower | annual/perennial | |
| Aconitum carmichaelii |
monkshood | perennial (zone 3-7) | |
| Ipomoea alba |
moon vine; moonflower | annual | |
| Ipomoea tricolor |
morning glory | annual | |
| Rhodanthemum hosmariense |
Moroccan daisy | perennial (Z8-9) | |
| Eryngium variifolium |
Moroccan sea holly | perennial (Z5-9) | |
| Verbascum blattaria |
moth mullein | biennial | |
| Cyclamen persicum |
mother's day cyclamen | tender perennial | |
| Leonurus cardiaca |
motherwort | perennial | |
| Anacyclus pyrethrum |
Mount Atlas daisy | perennial (Z4) | |
| Centaurea montana |
mountain bluet | perennial (Z3-8) | |
| Cercocarpus montanus |
mountain mahogany | shrub (Z5-10) | |
| Thlaspi species |
mountain pennycress | perennial | |
| Arabis alpina 'Snowcap' |
mountain rockcress | perennial (Z4-7) | |
| Geranium phaeum |
mourning widow geranium | perennial (Z5-9) | |
| Anemone baldensis |
Mt. Baldo windrose | perennial (Z6-9) | |
| Verbascum diascia |
mullein | perennial | |
| Verbascum olympicum |
mullein | biennial (Z5-10) | |
| Delphinium brunonianum |
musk larkspur | perennial (Z3-6) | |
| Euphorbia myrsinites |
myrtle spurge | perennial | |
| Solanum quitoense |
naranjilla | tender shrub | |
| Amsonia hubrichtii |
narrow-leaf blue star | perennial (Z5-9) | |
| Sisyrinchium angustifolium |
narrow-leaf blue-eyed grass | perennial (Z5-8) | |
| Agave striata |
narrow-leaf century plant | perennial (Z7b-10) | |
| Ligularia stenocephala 'The Rocket' |
narrow-leaf ligularia | perennial (Z4-8) | |
| Tropaeolum majus |
nasturtium | annual/tender perennial | |
| Calamintha nepeta |
nepitella | perennial | |
| Verbascum chaixii 'Album' |
nettle-leaved mullein | perennial (Z5-8) | |
| Symphyotrichum novae-angliae 'Purple Dome' |
New England aster | perennial | |
| Vernonia noveboracensis |
New York ironweed | perennial | |
| Zaluzianskya capensis 'Midnight Candy' |
night phlox | tender perennial (Z9-11) | |
| Physocarpus opulifolius |
ninebark | shrub | |
| Salvia nutans |
nodding sage | perennial | |
| Hymenoxys hoopesii |
orange sneezeweed | perennial (Z3-8) | |
| Bauhinia brachycarpa |
orchid tree | tree (Z8-11) | |
| Solanum melongena 'Ping Tung Long' |
oriental eggplant | annual vegetable | |
| Papaver orientale |
oriental poppy | perennial | |
| Zea mays 'Quadricolor' and 'Tiger Cub' |
ornamental corn | annual | |
| Origanum vulgare 'Heiderose' |
ornamental oregano | perennial | |
| Capsicum annuum |
ornamental peppers | annual | |
| Nicotiana sylvestris |
ornamental tobacco | annual/tender perennial | |
| Lesquerella ovalifolia |
oval-leaf bladderpod | | |
| Telekia speciosa |
ox-eye daisy | perennial (Z3-7) | |
| Magnolia sieboldii |
Oyama magnolia | tree | |
| Amsonia illustris |
Ozark blue star; shining blue star | perennial | |
| Tricyrtis macropoda |
pagoda toad lily | perennial (Z5-8) | |
| Tanacetum coccineum |
painted daisy | perennial | |
| Salpiglossis sinuata |
painted tongue | annual | |
| Persicaria virginiana 'Painter's palette' |
painter's palette | perennial (Z4-8) | |
| Echinacea pallida |
pale purple coneflower | perennial | |
| Carex muskingumensis 'Wachtposten' |
palm sedge | perennial (Z5-8) | |
| Syneilesis palmata |
palmate umbrella plant | perennial (Z5-8) | |
| Lupinus latifolius var. parishii |
Parish's lupine, broadleaf lupine | perennial (don't know zones) | |
| Townsendia parryi |
Parry's townsendia | perennial | |
| Chamaecrista fasciculata |
partridge pea | annual | |
| Luetkea pectinata |
partridgefoot | perennial (Z3B) | |
| Pulsatilla vulgaris |
pasque flower | perennial (Z4-8) | |
| Campanula persicifolia |
peach-leaf bellflower | perennial | |
| Exochorda x macrantha 'The Bride' |
pearlbush | shrub (Z5-8) | |
| Viola |
perennial violet | perennial | |
| Fritillaria persica |
Persian fritillary | perennial bulb (Z6-10) | |
| Allium aflatunense |
Persian onion | perennial bulb (Z5-9) | |
| Physalis peruviana |
Peruvian ground cherry; cape gooseberry | tender perennial | |
| Narcissus bulbocodium ssp. obesus |
petticoat daffodil | perennial bulb (Z5-9) | |
| Scabiosa crenata |
pincushion flower | perennial | |
| Scabiosa lucida |
pincushion flower | perennial | |
| Scabiosa columbaria |
pincushion flower, scabious | perennial | |
| Penstemon pinifolius |
pine-leaf penstemon | perennial | |
| Eucomis bicolor |
pineapple lily | perennial (Z7-10) | |
| Eucomis autumnalis |
pineapple lily | perennial (Z7-10) | |
| Helenium aromaticum |
pineapples | tender perennial | |
| Dianthus species |
pink | perennial | |
| Capnoides sempervirens |
pink corydalis; rock harlequin | perennial | |
| Calliandra eriophylla |
pink fairy duster | perennial (Z8b-10) | |
| Digitalis thapsi |
pink foxglove | perennial | |
| Senecio polyodon |
pink groundsel | perennial | |
| Zephyranthes macrosiphon |
pink rain lily | perennial (Z8-10) | |
| Scutellaria suffrutescens |
pink skullcap | perennial | |
| Veronica spicata 'Red Fox' |
pink spike speedwell | perennial (Z3-8) | |
| Indigofera amblyantha |
pinkflower indigo | perennial shrub (Z6-10) | |
| Clarkia speciosa ssp. immaculata |
Pismo clarkia | annual | |
| Coreopsis tinctoria |
plains coreopsis; calliopsis | annual | |
| Hosta hybrids |
plantain lily | perennial | |
| Toxicodendron radicans |
poison ivy | perennial vine | |
| Impatiens glandulifera |
policeman's helmet; Himalayan balsam | annual | |
| Rosa x rehderiana |
polyantha rose | shrub | |
| Papaver amurense |
poppy | perennial (Z5-9) | |
| Callirhoe involucrata |
poppy mallow; winecups | perennial | |
| Ampelopsis brevipedunculata var. elegans |
porcelain vine | perennial (Z4-8) | |
| Solanum pyracanthon |
porcupine tomato | tender perennial | |
| Calendula officinalis |
pot marigold | annual | |
| Ratibida columnifera |
prairie coneflower; Mexican hat | perennial (Z3-10) | |
| Geum triflorum |
prairie smoke | perennial (Z4) | |
| Zinnia grandiflora |
prairie zinnia | perennial (Z4-9) | |
| Cynoglossum wallichii |
prickly houndstongue | annual/biennial | |
| Primula saxatilis |
primrose | perennial | |
| Primula cortusoides |
primrose | perennial (Z3) | |
| Stanleya pinnata |
prince's plume | perennial (Z5-9) | |
| Petrorhagia prolifera |
proliferous pink | annual | |
| Indigofera pseudotinctoria 'Rose Carpet' |
prostrate indigo bush | shrub (Z6-9) | |
| Gomphocarpus physocarpus |
pufferfish milkweed; balloon cottonbush | tender perennial (Z7-10) | |
| Clarkia bottae |
punch-bowl godetia; farewell-to-spring | annual | |
| Phaseolus vulgaris 'Trionfo Violetto' |
purple climbing bean | annual vegetable | |
| Echinacea purpurea |
purple coneflower | perennial | |
| Agastache scrophulariifolia |
purple giant hyssop | perennial (Z4-9) | |
| Agastache rugosa |
purple giant hyssop | perennial (Z5-8) | |
| Lobelia x gerardii |
purple lobelia | perennial | |
| Verbascum phoeniceum 'Violetta' |
purple mullein | biennial /perennial (Z4-8) | |
| Dalea purpurea |
purple prairie clover | perennial (Z3-9) | |
| Aubrieta deltoidea |
purple rock cress | perennial | |
| Tragopogon porrifolius |
purple salsify | biennial | |
| Hypericum androsaemum 'Albury Purple' |
purple St John's wort | deciduous shrub (Z5-8) | |
| Verbena bonariensis |
purple-top vervain | tender perennial | |
| Antennaria dioica |
pussy-toes | perennial | |
| Aquilegia pyrenaica |
Pyrenees columbine | perennial (Z5-8) | |
| Eryngium bourgatii |
Pyrenees sea holly | perennial | |
| Daucus carota |
Queen Anne's lace | perennial | |
| Agave victoriae-reginae |
Queen Victoria agave | perennial (Z8-10) | |
| Dimorphotheca pluvialis |
rain daisy; cape daisy | annual | |
| Zephyranthes minima |
rain lily | perennial (Z7-10) | |
| Zephyranthes morrisclintii |
rain lily | perennial (Z7-10) | |
| Zephyranthes katheriniae |
rain lily | perennial (Z7-10) | |
| Zephyranthes primulina |
rain lily | perennial (Z8-11) | |
| Zephyranthes reginae |
rain lily | perennial | |
| Habranthus gracilifolius |
rain lily | perennial (Z7-10) | |
| Zephyranthes fosteri |
rain lily | perennial (Z7b-10) | |
| Zephyranthes 'Capricorn' |
rain lily | perennial | |
| Zephyranthes citrina |
rain lily | perennial bulb (Z7-10) | |
| Zephyranthes dichromantha |
rain lily | perennial (Z7-10) | |
| Zephyranthes drummondii |
rain lily; giant prairie lily | perennial (Z7-10) | |
| Dimorphotheca cuneata |
rainflower | perennial (Z8) | |
| Phyteuma scheuchzeri |
rampion | perennial | |
| Eryngium yuccifolium |
rattlesnake master | perennial (Z3-8) | |
| Linum grandiflorum |
red flax | annual | |
| Kniphofia uvaria |
red hot poker; torch lily | perennial | |
| Hesperaloe parviflora |
red yucca | perennial (Z5-9) | |
| Oenothera glazioviana |
red-sepal evening primrose | biennial/perennial (Z3) | |
| Enkianthus campanulatus |
red-vein enkianthus | shrub (Z5-8) | |
| Consolida regalis |
regal knight's spur; field larkspur | annual | |
| Symphyandra wanneri |
ringflower | perennial (Z6-9) | |
| Saxifraga arendsii |
rock cress | perennial (Z3) | |
| Arabis soyeri |
rock cress | perennial | |
| Calandrinia grandiflora |
rock purslane | tender perennial (Z8) | |
| Saponaria ocymoides |
rock soapwort | perennial (Z4-8) | |
| Veronica fruticans |
rock speedwell | perennial (Z5-8) | |
| Acinos alpinus |
rock thyme; alpine calamint | perennial (Z4) | |
| Draba arabisans |
rock whitlow-grass | perennial | |
| Draba norvegica |
rock whitlow-grass | perennial | |
| Consolida ajacis |
rocket larkspur | annual | |
| Penstemon strictus |
Rocky Mountain penstemon | perennial (Z4-9) | |
| Fibigia clypeata |
Roman shields | biennial/perennial | |
| Lychnis coronaria |
rose campion | perennial (Z3-8) | |
| Lavatera trimestris 'Silver cup' |
rose mallow | annual | |
| Arabis blepharophylla 'Spring Charm' |
rose rock cress | perennial (Z3-7) | |
| Glandularia canadensis 'Perfecta' |
rose vervain | perennial | |
| Gaillardia pulchella |
rose-ring blanketflower | annual/short-lived perennial ( | |
| Hibiscus sabdariffa |
roselle, Jamaican sorrel, tea hibiscus | tender perennial (Z9-11) | |
| Lilium rosthornii |
Rosthorn's lily | perennial (Z5-8) | |
| Lespedeza capitata |
round-headed bush clover | perennial (Z4-8) | |
| Phyteuma orbiculare |
round-headed rampion | perennial | |
| Heuchera cylindrica 'Greenfinch' |
roundleaf alumroot | perennial (Z4-8) | |
| Lilium regale 'Album' |
royal lily; regal lily | perennial (Z3-8) | |
| Ruta graveolens |
rue | perennial herb | |
| Digitalis ferruginea |
rusty foxglove | biennial/perennial (Z4-8) | |
| Carnegiea gigantea |
saguaro cactus | perennial (Z8-11) | |
| Orbexilum pedunculatum |
Samson's snakeroot, Congo root | perennial (Z6-9) | |
| Agastache mearnsii |
San Luis Mountain giant hyssop | perennial | |
| Dianthus arenarius |
sand pink | perennial (Z3-8) | |
| Heuchera pulchella |
Sandia mountain heuchera | perennial (Z4-9) | |
| Lilium sargentiae |
Sargent's lily | perennial (Z5-8) | |
| Cephalaria dipsacoides |
scabious | perennial | |
| Penstemon triflorus |
scarlet penstemon; Heller's beardtongue | perennial | |
| Penstemon cardinalis ssp. cardinalis |
scarlet penstemon; pride of the mountain | perennial (Z5-10) | |
| Hibiscus coccineus |
scarlet rose mallow | perennial (Z6-9) | |
| Campanula rotundifolia |
Scotch harebell | perennial (Z5-10) | |
| Crithmum maritimum |
sea fennel; rock samphire | perennial (Z7-10) | |
| Limonium gerberi |
sea lavender | perennial (Z2) | |
| Chasmanthium latifolium |
sea oats | perennial grass | |
| Mimulus guttatus |
seep monkeyflower | perennial (Z2) | |
| Prunella grandiflora |
self-heal | perennial (Z3-8) | |
| Jasione crispa? |
sheep's bit | perennial | |
| Thalictrum lucidum |
shining meadow rue | perennial | |
| Perilla frutescens |
shiso, beafsteak mint | annual | |
| Nicandra physalodes |
shoo-fly plant; apple of Peru | annual | |
| Dodecatheon meadia |
shooting star | perennial | |
| Penstemon cobaea |
showy beard-tongue | perennial (Z5-9) | |
| Mirabilis multiflora |
showy four o'clock; Froebel's four o'clock | perennial (Z4-10) | |
| Asclepias speciosa |
showy milkweed | perennial (Z3-9) | |
| Senna splendida |
showy senna; golden wonder | shrub/tree (Z9-11) | |
| Hylotelephium spectabile |
showy stonecrop; tall sedum | perennial (Z4-9) | |
| Syneilesis aconitifolia |
shredded umbrella plant | perennial (Z5-8) | |
| Sophora davidii |
shrub pagoda tree | shrub (Z4-7) | |
| Melica altissima 'Atropurpurea' |
Siberian melic grass | perennial (Z4-9) | |
| Salvia dumetorum |
Siberian sage | perennial | |
| Allium sikkimense |
Sikkim onion | perennial | |
| Sagittaria australis 'Benni' |
silk stockings; Appalachian arrowhead | perennial (Z5-10) | |
| Melica ciliata |
silky melic grass | perennial (Z5-10) | |
| Nassella tenuissima |
silky thread grass; Mexican feather grass | perennial (Z6-10) | |
| Eucalyptus cinerea |
silver dollar eucalyptus; argyle apple | tree (Z8-11) | |
| Lysimachia ephemerum |
silver loosestrife; willow-leaved loosestrife | perennial (Z5-9) | |
| Acer saccharinum |
silver maple | tree (Z3) | |
| Carlina acaulis |
silver thistle | perennial | |
| Scutellaria pontica |
skullcap | perennial | |
| Scutellaria salviifolia |
skullcap | perennial | |
| Scutellaria serrata |
skullcap | perennial | |
| Navarretia squarrosa |
skunkweed; pincushion plant | annual | |
| Polemonium viscosum |
sky pilot | perennial (Z4-8) | |
| Xanthisma texanum |
sleepy daisy | annual | |
| Pycnanthemum tenuifolium |
slender mountain mint | perennial (Z4-10) | |
| Agave gracilipes |
slimfoot century plant | perennial (Z6-9) | |
| Thalictrum minus |
small meadow rue | perennial | |
| Oenothera perennis |
small sundrops | perennial (Z4-9) | |
| Penstemon smallii |
Small's penstemon | perennial (Z5-9) | |
| Penstemon procerus |
small-flowered penstemon | perennial (Z3) | |
| Urospermum dalechampii |
smooth golden fleece | biennial/perennial | |
| Scutellaria antirrhinoides |
snapdragon skullcap | perennial | |
| Maurandella antirrhiniflora |
snapdragon vine | perennial (Z8-10) | |
| Euphorbia marginata 'Summer Icicle' |
snow on the mountain | annual | |
| Anemone sylvestris |
snowdrop anemone | perennial (Z4-8) | |
| Luzula nivea |
snowy wood rush | perennial | |
| Yucca elata |
soap tree | perennial (Z5-10) | |
| Dasylirion wheeleri |
sotol; desert spoon | perennial (Z8-11) | |
| Cucurbita pepo ssp. pepo 'Spaghetti Squash' |
spaghetti squash | annual | |
| Campanula primulifolia |
Spanish bellflower | perennial (Z5-8) | |
| Nigella hispanica 'African Bride' |
Spanish love-in-a-mist | annual | |
| Papaver rupifragum |
Spanish poppy | biennial | |
| Sedum hispanicum var. minus |
Spanish stonecrop | perennial (Z2-9) | |
| Lathyrus clymenum |
Spanish vetchling | annual | |
| Agoseris retrorsa |
spearleaf mountain dandelion | perennial | |
| Veronica allionii |
speedwell | perennial (Z3-9) | |
| Veronica schmidtiana |
speedwell | perennial (Z4-7) | |
| Cleome houtteana |
spider flower | annual | |
| Tradescantia virginiana |
spiderwort | perennial | |
| Alyssum spinosum |
spiny alyssum; madwort | perennial/dwarf shrub (Z6-10) | |
| Hieracium maculatum |
spotted hawkweed | perennial (Z5-9) | |
| Eupatorium maculatum 'Purple bush' |
spotted Joe-Pye weed | perennial (Z4-8) | |
| Centaurea stoebe ssp. stoebe |
spotted knapweed | biennial/perennial | |
| Delphinium patens |
spreading larkspur; zigzag larkspur | perennial | |
| Lathyrus vernus |
spring vetch; everlasting sweet pea | perennial (Z5-9) | |
| Euphorbia griffithii 'Fireglow' |
spurge | perennial (Z6) | |
| Aquilegia ecalcarata |
spurless columbine | perennial (Z6-9) | |
| Barnardia japonica |
squill | perennial (Z6-9) | |
| Ipomopsis rubra |
standing cypress | biennial/perennial (Z6-9) | |
| Allium cristophii |
star of Persia | perennial bulb (Z5-9) | |
| Scabiosa stellata |
starflower pincushions | annual | |
| Limonium gougetianum |
statice | perennial (Z7) | |
| Oxytropis borealis var. viscida |
sticky crazyweed | perennial | |
| Solanum sisymbriifolium |
sticky nightshade; wild tomato; litchi tomato | annual | |
| Scutellaria resinosa |
sticky skullcap; prairie skullcap | perennial (Z4-8) | |
| Allium strictum |
stiff onion | perennial | |
| Stokesia laevis |
Stokes' aster, cornflower aster | perennial (Z5-9) | |
| Aethionema grandiflorum |
stonecress | perennial (Z5-9) | |
| Sedum ussuriense |
stonecrop | perennial (Z3-9) | |
| Sedum aizoon |
stonecrop | perennial (Z4-9) | |
| Saxifraga stolonifera |
strawberry begonia | perennial (Z6-10) | |
| Potentilla megalantha |
strawberry cinquefoil | perennial (Z3-9) | |
| Digitalis x mertonensis |
strawberry foxglove | perennial | |
| Xerochrysum bracteatum |
strawflower | annual | |
| Gladiolus flanaganii |
suicide lily | perennial (Z8-10) | |
| Galtonia candicans |
summer hyacinth | perennial (Z6/7-10) | |
| Galtonia viridiflora |
summer hyacinth | perennial | |
| Adonis aestivalis |
summer pheasant's-eye | annual | |
| Euphorbia cyathophora |
summer poinsettia | annual | |
| Angelonia angustifolia |
summer snapdragon | tender perennial (Z9-11) | |
| Helianthemum nummularium |
sun rose; rock rose | perennial (Z5-8) | |
| Helianthus annuus |
sunflower | annual | |
| Agastache rupestris |
sunset hyssop | perennial (Z5-8) | |
| Asclepias incarnata |
swamp milkweed | perennial | |
| Lagenaria siceraria |
swan's neck gourd; bottle gourd | annual | |
| Artemisia annua |
sweet Annie | annual | |
| Lathyrus odoratus |
sweet pea | annual | |
| Amberboa moschata |
sweet sultan; cornflower | annual | |
| Silene armeria |
sweet william catchfly; none-so-pretty | biennial | |
| Aquilegia fragrans |
sweet-scented columbine | perennial (Z5-9) | |
| Beta vulgaris Cicla Group 'Bright Lights' |
swiss chard | cultivated as annual vegetable | |
| Gladiolus tristis |
sword lilyl; marsh Afrikaner | perennial (Z8-11) | |
| Thalictrum pubescens |
tall meadow rue | perennial | |
| Scutellaria altissima |
tall skullcap | perennial (Z4-10) | |
| Lathyrus tingitanus |
Tangier pea | tender perennial? | |
| Tanacetum vulgare |
tansy | perennial herb | |
| Echinacea tennesseensis |
Tennessee coneflower | perennial (Z5-9) | |
| Lupinus texensis |
Texas bluebonnet | annual | |
| Sophora secundiflora |
Texas mountain laurel | tree (Z7b-10) | |
| Allium texanum |
Texas onion | perennial (Z5-9) | |
| Salvia texana |
Texas sage | perennial | |
| Caulanthus crassicaulis |
thick-stem wild cabbage | perennial | |
| Bupleurum griffithii 'Decor' |
thorough-wax | annual | |
| Linaria triornithophora |
three birds flying | perennial (Z7-9) | |
| Malvastrum coromandelianum |
three-lobe false mallow | annual/perennial | |
| Galphimia glauca |
thryallis | shrub (Z8-10) | |
| Gentiana tibetica |
Tibetan gentian | perennial (Z6) | |
| Coreopsis tripteris |
tickseed | perennial | |
| Layia calliglossa |
tidy tips | annual | |
| Layia platyglossa |
tidytips | annual | |
| Tigridia pavonia |
tiger flower; Mexican shellflower | perennial (Z8-11) | |
| Tricyrtis hirta |
toad lily | perennial (Z5-9) | |
| Tricyrtis latifolia |
toad lily | perennial (Z5) | |
| Tricyrtis 'Shirohotogisu' |
toad lily | perennial (Z4-8) | |
| Linaria aeruginea 'Lindeza Violet' |
toadflax | annual/tender perennial | |
| Linaria reticulata 'Flamenco' |
toadflax | annual | |
| Kniphofia ensifolia |
torch lily | perennial (Z8-10) | |
| Kniphofia hirsuta |
torch lily; red hot poker | perennial (Z5-9) | |
| Polemonium foliosissimum flavum |
towering Jacob's ladder | perennial | |
| Townsendia eximia |
Townsend daisy | ? | |
| Gypsophila repens |
trailing baby's breath | perennial (Z3-9) | |
| Asarina procumbens |
trailing snapdragon | perennial (Z6-9) | |
| Gazania linearis |
treasure flower | perennial (Z5-8) | |
| Asclepias curassavica |
tropical milkweed; bloodflower | tender perennial | |
| Myosotis scorpioides |
true forget-me-not; water forget-me-not | perennial (Z3-8) | |
| Lilium henryi |
trumpet lily | perennial (Z5-8) | |
| Rabdosia longituba |
trumpet spurflower | perennial (Z6-8) | |
| Clematis heracleifolia |
tube clematis | subshrub (Z5-9) | |
| Agave polianthiflora |
tuberose-flowered agave | perennial (Z8-10) | |
| Oenothera caespitosa |
tufted evening primrose | biennial/perennial (Z4) | |
| Petrorhagia saxifraga |
tunic flower | perennial | |
| Plantago asiatica 'Variegata' |
variegated plantain | perennial | |
| Lathyrus venetus |
Venetian vetchling | perennial | |
| Legousia speculum-veneris |
Venus' looking glass | annual | |
| Pycnanthemum virginianum |
Virginia mountain mint | perennial (Z3-7) | |
| Malcolmia maritima |
Virginia stock | annual | |
| Sauromatum venosum |
voodoo lily | perennial (Z6-10) | |
| Penstemon cyananthus |
wasatch penstemon | perennial? | |
| Carex pendula |
weeping sedge | perennial | |
| Aquilegia formosa |
Western red columbine | perennial | |
| Mimosa quadrivalvis var. occidentalis |
western sensitive briar | perennial (Z?) | |
| Polemonium pulcherrimum |
western sky pilot | perennial (Z4-7) | |
| Agave ovatifolia |
whale's tongue agave | perennial (Z8-10) | |
| Triticum 'Moroccan Frost' |
wheat | annual | |
| Penstemon whippleanus |
Whipple's penstemon | perennial | |
| Xerochrysum papillosum |
white everlasting | perennial | |
| Baptisia alba var. alba |
white false indigo | perennial | |
| Baptisia alba var. macrophylla |
white false indigo; prairie false indigo | perennial | |
| Dalea candida |
white prairie clover | perennial (Z3-8) | |
| Lychnis coronaria 'Alba' |
White rose campion | perennial | |
| Carex curta |
white sedge | perennial | |
| Aristolochia fimbriata |
white-veined pipevine | perennial (Z7-9) | |
| Draba aizoides |
whitlow-grass | perennial | |
| Draba dubia |
whitlow-grass | perennial (?) | |
| Draba cretica |
whitlow-grass | perennial (Z9) | |
| Draba hispanica |
whitlow-grass | perennial (Z7) | |
| Morina longifolia |
whorlflower | perennial | |
| Tinantia erecta |
widow's tears | tender perennial | |
| Sedum pulchellum |
widowscross; lime stonecrop | perennial? | |
| Pediomelum tenuiflorum |
wild alfalfa; slender-flower breadroot | perennial (Z4-9) | |
| Phlox divaricata |
wild blue phlox | perennial (Z3-8) | |
| Conostomium natalense |
wild pentas | shrub | |
| Aquilegia canadensis |
wild red columbine | perennial (Z3-8) | |
| Epilobium angustifolium |
willow orchid | perennial (Z4-10) | |
| Digitalis obscura |
willow-leaf foxglove | biennial/perennial (Z6-10) | |
| Stylomecon heterophylla |
wind poppy | annual | |
| Anemone multifida |
windflower | perennial (Z3-8) | |
| Anemone biarmiensis |
windflower | perennial (Z3-8) | |
| Anemone cruciata |
windflower | perennial | |
| Verbesina alternifolia |
wingstem | perennial | |
| Torenia baillonii 'Susie Wong' |
wishbone flower | annual | |
| Callirhoe papaver |
woodland poppy mallow | perennial (Z6-9) | |
| Sedum ternatum |
woodland stonecrop; wild stonecrop | perennial | |
| Asperula gussonei |
woodruff | perennial (Z5-8) | |
| Verbascum densiflorum |
woolly mullein | biennial | |
| Verbena stricta |
woolly vervain | perennial | |
| Vigna unguiculata |
yardlong bean; Chinese red noodle bean | annual | |
| Achillea 'Schwellenberg' |
yarrow | perennial (Z3-9) | |
| Achillea sibirica var. camtschatica 'Love Parade' |
yarrow | perennial (Z3-9) | |
| Baptisia sphaerocarpa |
yellow baptisia | perennial (Z5-9) | |
| Dicentra macrocapnos |
yellow bleeding heart vine | perennial | |
| Turnera ulmifolia |
yellow buttercup; yellow alder; sage rose | tender perennial/shrub (Z9-11) | |
| Corydalis lutea |
yellow corydalis | perennial (Z5-7) | |
| Cosmos sulphureus |
yellow cosmos | annual | |
| Digitalis grandiflora |
yellow foxglove | perennial | |
| Agastache nepetoides |
yellow giant hyssop | perennial (Z3-8) | |
| Arisaema flavum |
yellow jack-in-the-pulpit | perennial (Z4-10) | |
| Thalictrum flavum ssp. glaucum |
yellow meadow rue; dusty meadow rue | perennial | |
| Allium flavum |
yellow onion | perennial bulb | |
| Passiflora lutea |
yellow passionflower | perennial (Z5-9) | |
| Dicranostigma leptopodum |
yellow poppy | | |
| Kirengeshoma koreana |
yellow waxbells | perennial (Z5-9) | |
| Kirengeshoma palmata |
yellow waxbells | perennial (Z5-9) | |
| Oxalis stricta |
yellow wood sorrel | perennial | |
| Atropa belladonna var. lutea |
yellow-flowered deadly nightshade | perennial | |
| Cladrastis kentukea |
yellowwood | tree | |
| Lysimachia yunnanensis |
Yunnan loosestrife | perennial (Z7-9) | |
| Thalictrum delavayi |
Yunnan meadow rue | perennial | |
