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Geranium himalayense ‘Plenum’ is a distinctive double-flowered form of the Himalayan cranesbill, prized for its unique, fully double purple blooms that resemble miniature roses. Flowering in early to mid-summer, the ruffled petals create a dense and striking display above mounds of fresh green, divided foliage. The abundant blooms make it a highly ornamental choice for borders, cottage gardens, or informal planting schemes, while also providing interest in cut flower arrangements.

This hardy perennial thrives in full sun to partial shade with well-drained soil and is noted for being resilient and low-maintenance. Its unusual double flowers set it apart from other hardy geraniums, offering gardeners a showier and longer-lasting seasonal display.