Cosmos atrosanguineus, the chocolate cosmos, is a species of Cosmos that produces dark red to black or brownish red flowers which have a scent resembling chocolate, which is one reason for its popularity as a cultivated plant.The plants are often grown from seeds, and the plants form a tuberous root.

It requires partial sun or full sun, and flowers from mid to late summer. In  colder areas the tuber can be dug up and stored in a frost-free area over the winter.

Although cosmos smells like chocolate, it should not be eaten.

Rare seeds.

Type: Perennial, often grown as an annual in colder climates

Hardiness zone: 8-11 (possibly down to 7 if protected with mulch)

Height: 24", 60cm

Location: Sun or part sun

Seeds per packet: 5