Easily grown in average, medium moist soils in full sun to part shade. Prefers moist, fertile soils which do not dry out. Cut plants to the ground in late winter. Best propagated by stem cuttings. This species generally grows better in open woodland areas.
It is a substantial plant which needs space, but when planted in groups or massed can provide spectacular flowering and architectural height. Border rears, cottage gardens, meadows, native plant gardens, wild/naturalized areas or water margins.
Straight Species