The Genus Isocoma
Goldenweed

Family: Asteraceae

Shrubs usually about 2-3’ tall with very nectar rich, golden flowers occurring in fall. Flowers are followed by floofy material with seeds. Though the plants can look unruly when not flowering, they are fantastic when in bloom and an important wildlife plant.

Plant in full to part sun, low water when established. Most species hardy to at least 10°F.

This is an important fall blooming nectar source for numerous butterflies, bees, and other pollinators. Larval host for the Gumweed Plume Moth (Dejongia californicus), the snout moth Diastictis sperryorum, the American Sunflower Moth (Homoeosoma electella), and the Snakeweed Borer Moth (Pelochrista ridingsana).

Important medicinal plant (used internally and externally) where the genus occurs.

Photo of Isocoma acradenia by Max Licher, SEINET

There are 15 species of Isocoma found in the semi-arid areas of Southwestern United States and Mexico. The name of this genus is derived from the Greek for "equal hair" referring to the pappus on the seed.

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