10 - 15 cm
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.
Seed - sown in January - March.
Seed not covered and stored at 20°C (68°F) until germination.
Drought tolerant. Tender, can hardly survive winter outside unprotected.