Toxicity can vary in a plant according to season, the plant???s different parts, and its stage of growth; and plants can absorb toxic substances, such as herbicides, pesticides, and pollutants from the water, air, and soil.Flower April to June.Flower April - MayHabitat Moist shaded sites in eastern hardwood forest: coves, hillsides; to 4000 ft (1200 m); also cultivated as an ornamental.Range Easte