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Agastache scrophulariifolia

 
Agastache scrophulariifolia
purple giant hyssop
Agastache scrophulariifolia

Common name purple giant hyssop
Family lamiaceae
Life cycle perennial (Z4-9)
Flowers purple spikes throughout summer
Size 2-4' tall
Light full sun-part shade
Cultural notes average garden soil. drought-tolerant
From seed self-sows in my garden. indoors, give several weeks cold stratification.
detailed seed-starting info below
Seed ripenslate October

Trouble-free plant with fragrant, textured foliage. Some seedlings come up with bright green rather than purple-tinged foliage, and develop white flowers. I prefer the purple, so I weed the white ones out, although I guess in the agastache genus white is the more uncommon color.

purple giant hyssop

We left this plant behind in our Pennsylvania garden (and wish it well); we don't grow it in Houston.

Seed for this plant is included on my seed trade list

One or more images of this plant are included in my stock photo catalog

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Seed-starting details for this plant

  1. Seed from '01 garden. Baggy 70F (5w; 3%G, 7d)-35F (5w)-70F (33%G, 4-13d)

Cold treatment appears to be helpful.


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common mis-spellings: scrophulariaefolia

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Last modified: January 26, 2009
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