As many a homeowner knows, crabgrass is an ugly and tedious lawn weed that grows in a prostrate fashion close to the ground, stemming out like the legs of a crab. It grows in clumps, becomes very thick and patchy, and tends to choke out the more desirable grasses surrounding it. Crabgrass grows briskly and thrives in hot weather. It usually starts to grow in early spring when the soil temperature reaches 55-60 degrees, and remains that temperature for about a week or more. The grass particularly likes hot, dry areas and tends to grow in bare spots of soil where it may get more sunlight. It is also common by windows where the sun reflects onto the ground, heating