Penstemon ‘Sour Grapes’ is a stunning perennial with tall spires of dusky mauve and lavender-blue flowers that shimmer in the summer sun. The tubular blooms, flushed with soft white throats, appear from early summer right into autumn, bringing colour and elegance to sunny borders.
It’s a strong, reliable variety that thrives in well-drained soil and keeps flowering for months with regular deadheading. Pair it with Echinacea ‘White Swan’ for contrast, Stipa tenuissima ‘Pony Tails’ for texture and movement, and Scabious ‘Pink Mist’ for a soft, romantic mix that bees and butterflies will love.
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Sunlight: Full sun or light shade
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Soil: Well-drained, fertile soil
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Position: Ideal for borders, cottage gardens, and wildlife planting
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Hardiness: Hardy in most areas; protect from severe frost
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Height & Spread: Around 60–70cm tall and 40cm spread
A beautiful, long-flowering Penstemon that brings soft colour, movement, and a touch of refinement to sunny borders.