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Penstemon kunthii

Penstemon kunthii
Kunth's penstemon
Penstemon kunthii

Common name Kunth's penstemon
Family plantaginaceae
Life cycle perennial (Z5-10)
Flowers purple-magenta (summer)
Size 24"
Light sun
Cultural notes drought-tolerant

Penstemon from high elevations in Mexico featuring spikes holding a profusion of tubular flowers. Sometimes considered a form of P. campanulatus. I've found it to be a particularly quick-growing species, reaching 12" by early summer of its first year, as shown in the photo at right.

Kunth's penstemon

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

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Seed-starting details for this plant

  1. Seed from '12 trade. Baggy 35F (8w) - 70F with light (62%G, 5-10d)
  2. Same seed as above, cold-stored. Baggy 35F (8w) - 70F with light (~50%G, 3-8d)
  3. Same seed as above, cold-stored. Baggy 35F (8w) - 70F with light (66%G, 3-14d)
  4. Seed from NARGS '18/'19 exchange. Baggy 35F (8w) - 70F with light (6%G, 22d)

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Last modified: March 07, 2021
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