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Penstemon whippleanus

 
Common name Whipple's penstemon
Family plantaginaceae
Life cycle perennial
Flowers dark purple (summer)
Size 2'
Light sun
From seed One of the easiest penstemons to grow from seed, requiring no cold treatment or light.
detailed seed-starting info below

Lovely strongly upright penstemon - a single flower stalk rises from a neat rosette of foliage, with tubular flowers spaced along it. It is supposed to be long-lived - unfortunately, ours all perished after their second season. Maybe the wet conditions throughout the season last year did them in. Subsequent attempts to re-establish this species from seed have met with limited success.

Penstemon whippleanus

In our garden, this plant grows in the following areas: rock garden, orchard nursery area

Read about all the penstemon species in our garden

Seed for this plant is included on my seed trade list

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PlantLinks to other web pages about Penstemon whippleanus


Seed-starting details for this plant

  1. Seed from '01 trade. Baggy 70F (50%G, 3-12d)
  2. Same seed as above. Baggy 70F (14%G, 6-26d)
  3. Seed from '06 trade. Baggy 70F (12d) - 70F with light (13d; no G)
  4. Seed from '07 trade. Baggy 70F (60+%G, 7-10d)
  5. Seed from '10 trade. Baggy 70F (45%G, 5-8d)
  6. Same seed as above, cold-stored. Baggy 70F (70%G, 5-20d)
  7. Same seed as above. cold-stored. Baggy 70F (76%G, 5-16d)

Easy from seed, but appears to lose viability quickly in some circumstances (cold storage is probably helpful). I've found that it's best to wait with potting up until leaves develop in the baggy environment.


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Last modified: February 15, 2014
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