It forms root nodules with a symbiont fungus to fix its own nitrogen; so it grows well in poor or sterile soil. Its persistent fruit looks like a very small pine cone. Informal specimen plant or could be used as a mass planting or hedge in moist areas. It is usually a multi-stemmed tall shrub.

Bloom period can be prolonged by removing flowers as they wither. It does not compete well with aggressive plants. Wildflower garden. Blooms best in light shade. Use in a bog, pond or water garden.