Crabgrass
(Digitaria sanguinalis)
Family: Poaceae
Also known as: Large Crabgrass
Crabgrass is a summer annual that germinates when
the temperature of the soil reaches a consistent 55 Degrees Fahrenheit and is
generally killed by the first frost. Crabgrass leaves are rolled in the bud.
They first appear wide, short, and blunt-tipped. 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.
It can also produce 150,000 seeds. It needs warm soil and sunlight to
germinate. Crabgrass can be found throughout the United States.
Do not seed, core aerate or verticut when the soil
and weather conditions are prime for the germination of crabgrass. By doing a
slightly raised mowing height may help prevent the establishment by providing
shade from sunlight. When crabgrass is going to seed, lower the mower height
and collect the clippings to prevent seeds from establishing. Often confused with Quack grass which is darker in color and cannot be eliminated with a pre- or post- emergent products.
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