Dramatic spikes of royal purple flowers in late summer. Needs damp soil in summer so is ideal for bog gardens. Height to 1.2m. Hardy
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. But it is easily grown from seed as an insurance against loss.
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