Penstemon 'Sour Grapes'
An outstanding form of penstemon with vibrant purple-blue flowers held in bunches, like grapes, but on elegant spires in summer. Suitable for the foreground of your garden bed or perennial border, Penstemon 'Sour Grapes' has a dense habit best suited to multiple planting. A reliable flowering perennial for all conditions, it is also popular with bees and other beneficial insects.
Drought-tolerant once established, penstemons are easy-care perennials suitable for most conditions. Plant in full sun in an enriched, free-draining soil. Water regularly during establishment and extended dry periods for improved flowering and performance. Prune back to a low mound after flowering to maintain a compact habit.