Formerly used to treat venereal diseases, hence the species name; also a love potion ingredient. Hmmm... This plant is a native of stream banks and other moist areas and is now mostly grown for its large showy blue flowers. Does fine in average garden soil but needs irrigation during very dry spells. Packet(Standard): $3.50; 1/8 oz: $20.00; 1/4 oz: $38.00; 1/2 oz: $70.00; - 400,000 seeds/oz