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Plant in spring or autumn in fertile, well-drained soil. Water regularly, especially the first year.
It tolerates partial shade, but those that receive full sun have greater flower yield. Ideally an east-facing sunny location with afternoon shade from hot summer sun will protect it from being scorched. If the location is in the path of bitterly cold winds during winter, it may need some burlap protection, or reconsider planting it in a more sheltered spot.
Trim off the faded flowers in late spring by cutting just below the flowerheads. This can encourage a second batch of blooms in autumn.