These seeds were collected from Macrotyloma uniflorum, also known as Horse Gram, and Madras Gram. It is often referred to as its synonym Dolichos biflorus. This annual vine likes to live in full sun where it can grow to about 15 feet long. The purple flowers are fragrant and on display from the middle of the summer until the middle of the fall. It attracts an array of birds, bees, and butterflies. This annual can be grown in all USDA Hardiness Zones.