![]() ![]() Penstemon Blackbird bears deep purple-pink flowers with white striped throat. Penstemon 'Blackberry' a hardy perennial with glossy, semi-evergreen foliage that produces bell-shaped flowers in a rich shade of purple from June onwards. The variety praecox produces upright spikes of tubular flowers that range from pink through to purple - available from Thompson & Morgan. Good cultivars include 'Twizzle' with narrow red flowers - available from Thompson & Morgan. ![]() Penstemon barbatus (half-hardy) a bushy plant with glossy, lance-shaped leaves and slender, tall stems topped with narrow tubular flowers in summer. Penstemon Alice Hindley a large-leaved perennial that bears attractive large tubular-bell-shaped, pale lilac-blue flowers from midsummer to autumn. Penstemon Apple Blossom a very attractive variety with subtle pale pink/white flowers. Penstemon Arabesque bears large bell-shaped blooms over a long flowering period. Flower colours range from shades of purple and red to pink and blue, often with a white throat. There are many different cultivars of Penstemon availableįrom medium to dwarf height. Species can be sown in the open in summer.įor named cultivars and hybrids, strike cuttings of non-flowering shoots in July-August and root in a free draining compost in a propagator. Raise from seed sown in trays in under glass in gentle heat in February. Susceptible to attack by slugs, snails and eelworms. Alternatively, cut down stems in autumn and protect the crowns with a mulch over winter. Leave old foliage on the plants for additional winter protection and cut back in the spring. Winter wet and provide some winter protection in cold areas.ĭeadhead regularly to encourage further flowering. Penstemons are reliable in sheltered, warmer areas but can be killed by severe winter frosts. The flowers provide nectar and pollen for bees and other pollinating insects. Dwarf forms are ideal for the rock garden. Ideal for the middle of a summer flower bed or border. Avoid waterlogged conditions.Ĭan also be grown as summer flowering bedding in cooler regions. Alpines can be planted from autumn to spring.īest planted in a moderately fertile, free draining soil, in full sun. Hardiness: Hardy in southern and coastal regions of the UK. ![]()
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