A rather taller variety penstemon 39garnet39 produces a profusion of rich red45purple bell45shaped flowers on elegant stems from june right through to october a perfect addition to cottage garden borders penstemon 39garnet39 sometimes known as penstemon 39andenken an friedrich hahn39 forms bushy semi45evergreen clumps which provide enduring vibrant colour penstemon flowers are also attractive to bees height 75cm 40303441 spread 60cm 40243441