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This low-growing, spreading perennial is ideal for the front of the border, where it will provide excellent ground cover. In the summer, Prunella grandiflora 'Violet-Flowered' has purple blossoms that pollinating insects adore. The semi-evergreen foliage retains many of its leaves throughout the winter. This beautiful, low-maintenance cottage garden plant with loads of old-fashioned charm is commonly known as Self-Heal. Height: 30cm (12). Spread: 50cm (20).