Blooms for 8 weeks from late spring throughout the summer. The parent species are hardy North American natives adapted to moist woodland edges, meadows and prairies.
Perfect for the woodland garden as it thrives under trees; also attractive by a pond or stream. Part to full shade. Will tolerate damp areas. 15-18" tall. Z3. (bare-root crowns)
When you receive your order, open the bags and check the stock. Roots and crowns should be firm and pliable. If they are slightly dry, add a little water or, if they are going to be potted up soon, wet the roots. Generally, a little surface mold is harmless and will not affect the plant’s future performance. If you cannot pot them up immediately, store them in a cool (35–40°) location for a short time.
Do not plant bare-root perennial plant crowns directly outdoors.
Pot up the rootstock using well-drained potting mix in a deep 6" pot or a 1-gallon container. Avoid coiling the roots in under-sized containers.Grow newly potted perennials for a few weeks in a protected location in indirect light at 50–60°. Wet and/or cold conditions for an extended period may cause rotting.Transplant outside once they show some top growth and the danger of frost has passed.
For more info:About planting bare-root perennials.