Repellent to insects, it requires little care if provided with rich well-drained soil. An easy, showy perennial with yellow-centered white-petaled daisy-like flowers. Tea made from the leaves is used to treat arthritis, fevers, colds, and as a tonic. The root contains pyrethrin - a powerful insecticide; may cause dermatitis in some people. Recent research shows leaves are effective in controlling migraine headaches especially when used with leaves of Laurus nobilis. Reseeds. Packet(Standard): $3.50; 1/8 oz - $8.00; 1/4 oz - $15.00; 1/2 oz - $28.00; 1 oz. - $54.00