Crabgrass is a pesky interloper that can really ruin the look of your lawn. Left unchecked, it can spread quickly across wide areas as its seed travels. Here's how to stop it in its tracks.
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The best offense, of course, is a good defense, and that means keeping your lawn thick and healthy and mowing it high. That creates deep shade at the roots, which makes it tough for sun-loving crabgrass to get started.
If you do see a small growth of crabgrass, pull it by hand and dispose of it. Don't use a mulching mower on a lawn that has patches of crabgrass, as that only spreads the seeds over a wider area.
If your crabgrass is widespread, you'll need to remove the affected areas of your lawn with a tiller or power rake, then reseed. Keep the newly seeded area lightly watered until the grass comes in, and immediately reseed any bare patches.
If you have persistent problems with crabgrass, come springtime you might want to use a pre-emergent crabgrass preventer on your lawn. That will keep any of the seeds that blow in from your neighbors' yards from taking root in yours.
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