Noun
grasses with creeping stems that root freely; a pest in lawns
Source: WordNetIn late winter/early spring those seeds are laying in your soil getting ready to sprout with the warm weather which means a little bit of crabgrass last year can turn out to be a lot of crabgrass this year. Source: Internet
First, crabgrass is a temporary grass that germinates each spring and dies each fall leaving behind bare, muddy lawn areas during winter and early spring. Source: Internet
Sorry you have crabgrass. Source: Internet