- any of several chrysanthemums, as Chrysanthemum coccineum, having finely divided leaves and showy red, pink, lilac, or white flowers, cultivated as an ornamental.
- any of several chrysanthemums, as C. cinerariifolium, or C. coccineum, cultivated as a source of insecticides.
- the dried flower heads of these plants, used chiefly as an insecticide and sometimes in medicine for certain skin disorders.
- any of several cultivated Eurasian chrysanthemums, such as Chrysanthemum coccineum and C. roseum, with white, pink, red, or purple flowers
- any insecticide prepared from the dried flowers of any of these plants, esp C. roseum
