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Crabgrass

CrabgrassPlant Description: Crabgrass is a summer annual that germinates when soil temperatures reach a consistent 55 degrees F and is generally killed at the first frost. Crabgrass leaves are rolled in the bud; the first leaf appears short, wide and blunt-tipped. The ligule is tall and membranous with jagged edges, and the auricles are absent. The collar is broad with long hairs. Crabgrass is light green in color, coarse bladed and will root at the nodes when they touch the ground. A single crabgrass plant can produce up to 700 tillers. It is a bunch type grass.

The inflorescence is a panicle of branches, with spikelets in two rows. A crabgrass plant can produce 150,000 seeds. Crabgrass needs warm soils and sunlight to germinate. Crabgrass is found throughout the United States. Do not seed, core aerate or verticut when soil and weather conditions are appropriate for the germination of crabgrass. A slightly raised mowing height may help prevent the establishment of crabgrass by providing shade from sunlight. When crabgrass is going to seed, lower the mowing height and collect clippings to prevent seed establishment.

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