This perennial spreads by means of creeping rhizomes, and new plants may appear near the original clump in the spring. They are easily transplanted if they show up where they are not wanted. This should be done in the spring. Make sure to provide a heavy mulch in the fall the first two seasons to prevent frost heaving.
Garden Style:
Cottage, Eclectic, Woodland Shade
Other Features:
Border Plant, Cut Flower, Cut Foliage, Mass Planting, Focal Point