Herbaceous perennial. Sow seed indoors late winter early spring, transplant in spring after the last frost. Prefers either sun or shade and moist soil. Harvest in evening or early morning for highest essential oil content. A popular tea for its nutritional value. The entire plant is covered in stinging hairs which cause painful welts. Saute or steam for a fresh spring green, or include with tea for nutritive and medicinal benefits.