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Flowers · perennial
Penstemon (beardtongue) from seed
Penstemon spp. · also searched as beardtongue
- Germination temperature
- 70 to 70°F (21 to 21°C)
- Sowing depth
- surface; do not cover
- Days to germinate
- 7 to 21 days
- Light
- Needs light: press onto the surface
- Before sowing
- Chill 3 to 8 weeks at 40°F moist (varies by species).
Sowing
Surface-sow after a moist chill; germination takes 1 to 3 weeks at about 70°F (Iowa State).
Care and transplanting
Needs sharp drainage.
Problems
Rot in wet soil.
Saving seed
Collect dry capsules.