Medicinal herb that has been used for centuries for colds, flu and other viruses. Native to Southern and Eastern US. Perennial plants to 4 ft with masses of long-lived, white flowers. Dried leaf and flowering tops are dried and used for tea or tincture. Plant prefers part shade to full sun and moist soils. Sow seed on surface, tamp in, and keep evenly moist until germination. Usually takes between 1 and 3 weeks for germ. Spotty germination is normal. Space plants 2 feet apart.