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Dead head regularly and you will have flowers Spring to Autumn. Larger than average flowers are a sublime shade of purple, and they are made all the more dramatic by their near-black calyces and supporting stems. Bees love it. Height & Spread 1.2m x 50cm. Full sun or light shade. Does need winter protection.
Please note these plants have been overwinter under glass. You will need to harden off before planting out. Showing signs of spring growth.