Gomphocarpus physocarpus, previously known as Asclepias physocarpus (it's name was changed in 2001), is an undershrub Milkweed perennial that can grow to over six feet! The plant blooms in warm months. It grows on roadside banks, at elevations of 2800 to 5000 feet above sea level. The plant prefers moderate moisture, as well as sandy and well-drained soil and full sun.

The flowers are small, with white hoods and about 1 cm across. The follicle is a pale green, and in shape an inflated spheroid. It is covered with rough hairs. It reaches three inches in diameter. The leaves are light green, linear to lanceolate and 3 to 4 inches long, 1.2 cm broad. The brown seeds have silky tufts.

These seeds are rare and in limited supply.

Type: Perennial

Height: Up to 6 feet!

Location: Sun or part sun

Hardiness zones: 8-10

Seeds per packet: 10