Rocky Mountain Beardtongue
30 - 45 cm
purple - blue-violet
July - August
well drained, gritty
acid - neutral - alkaline
Penstemon is a genus in the family Plantaginaceae. It is a large genus native to N-America. They are usually low growing herbaceous plants or sub-shrubs with irregularly shaped flowers. They prefer full sun and many are well suited to rock gardens.
Division in spring.
Seed - sown in September - November.
Seed not covered and stored outside until spring, or at least refrigerated for 2-3 months and then brought to 20°C (68°F) for germination.
Needs well drained soil and full sun. Drought tolerant.