Weeds of Container Nurseries in the United States

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Weeds of Container Nurseries in the United States

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Annual bluegrass (Poa annua)

Family: Poaceae

Annual bluegrass is a winter annual, clump-forming grass with a yellow-green color, prow-shaped leaf tips and a distinctive whitish flower head. Preferring moist, shady areas, it emerges from fall through spring; flowers, and then dies with the onset of warm weather. Annual bluegrass is a prolific seed producer but is well controlled by most preemergence herbicides labeled for use in nursery crops. It is also controlled by one selective postemergence grass herbicide.