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Message: [QUOTE="huskyrob1, post: 2773502, member: 1226"] No you can't. You'll have to wait until the early spring. Unlike normal grass which goes dormant at the first frost in fall, frost completely kills off crabgrass plants, EXCEPT for the millions of seeds. You might notice in the early winter after a heavy rain, where there was crabgrass is now a muddy mess because now there's nothing there to hold the soil together. Start raking and seeding your lawn in early March, even late February if you have some warm days, completely rake out all the dead crabgrass roots as best you can, seed the area half fescue and half Kentucky bluegrass. Rake the seeds in with a good dark top soil, ten bags ought to be enough. Then wait, the important thing is to help your new grass get an early spring jump on crabgrass. Even though you have raked out the crabgrass as best you could, the crabgrass seeds are still there, but they don't germinate until the soil temperature hits 65F, by that time your early spring work will have paid off, but you're not done, watering your new grass is extremely important to help it choke out any crabgrass that does germinate. If you don't water and fertilize, the the crabgrass will eventually win out again over a few years. Scott's sells a good early spring fertilizer that inhibits crabgrass germination while giving your grass a good shot of the nitrogen it needs. [/QUOTE]