Penstemon
Common Name: Penstemon
Genus: Penstemon
Species: heterophyllus
Cultivar: 'Heavenly Blue'
Skill Level: Experienced
Exposure: Full sun
Hardiness: Hardy
Soil type: Well-drained/light, Moist
Height: 50cm
Spread: 45cm
Time to take cuttings: July to August
Flowering period:
July
to
October
Penstemons are better known as summer-flowering border perennials, but the genus includes a few woody shrublets which are perfect for rock gardens and front-of-border positions. P. heterophyllus is the best known, a violet-blue flowered and variable Californian shrub that has given rise to many colourful varieties. 'Heavenly Blue' is one of the most colourful, with rich mauve-blue flowers, long and typically penstemon-shaped, covering the dwarf plants in dense masses. These blooms help to attract beneficial insects to the garden.Plants are very hardy if grown in full sun and very well-drained soil.
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