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Penstemon 'Sour Grapes' (Beard Tongue)


Penstemon 'Sour Grapes' (Beard Tongue)

Greyish-blue flowers with metallic sheen


Elegant spikes of small, tubular, foxglove-like flowers appear from July to October among lance-shaped, bright green leaves. This easy-to-grow perennial will quickly form large, leafy clumps and is perfect for adding a splash of colour to the middle of a sunny, well-drained border. If you deadhead regularly, the flowers will persist until the first frosts. The magenta-blue flowers of this penstemon have a metallic sheen, reminiscent of black grapes, which contrasts particularly well with deep purples and blues.


  • Position: full sun or partial shade
  • Soil: fertile, well-drained soil
  • Rate of growth: average
  • Flowering period: July to October
  • Hardiness: frost hardy (will need winter protection in cold areas)
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