Dramatic spikes of purple flowers in late summer, above lance-shaped purple flushed leaves. Loved by bees and butterflies. Needs damp soil in summer so is ideal for bog gardens. Hardy. Up to 60cm.
Although this plant is perennial it can be a bit tricky to get through the winter as it is prone to rotting. Many growers recommend a dry mulch of bark chips or similar. It's also very attractive to slugs.
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