Hairy galinsoga Galinsoga quadriradiata Cav.
Family: Asteraceae (Composite family)
Life cycle: Annual
Native status: Native to Mexico, introduced to U.S.
Habitat: Gardens, vegetable production
General description: Erect to spreading, much branched, stems reaching heights of 2 ft. Leaves are triangular, deep veined, with toothed margin, lighter green on lower side. Upper leaf surface and stems are very hairy. Numerous flower heads with five white, 3-4 toothed ray flowers surrounding numerous yellow disc flowers.
Key ID characteristics: Much branched plant with hairy stems and leaves. White ray flowers with gap between individual flowers.
Similar species: Smallflower galinsoga is very similar to hairy galinsoga, but the stems are smooth or sparsely hairy.
Miscellaneous: Hairy galinsoga is also known as quickweed because of its rapid flowering and seed maturation. Another name is shaggy soldier. It can have more than one generation in a growing season – spring germinating plants mature in early-summer and drop seed that can germinate and produce a second crop of hairy galinsoga plants. This short life-cycle is ideally suited for many vegetable crops that also have short life-cycles.