Canada Anemone (Anemone canadensis) is a groundcover plant with white flowers from spring to early summer. They prefer moist soil in sun or part sun, but they can tolerate some shade. They can grow up to 2 feet tall and are a good choice for slopes. Companion plants include Cinnamon Fern (Osmunda cinnamomea) and Cardinal Flower (Lobelia cardinalis).
Few serious maintenance needs, though taller plants may need staking.