Crabgrass is a prime example — it's common and can get invasive, especially in warmer seasons. It grows low and spreads out, forming mats that smother everything else. Broadleaf weeds are easier ...

Kansas State University horticulture expert Cynthia Domenghini suggests a maintenance regime for cool-season grasses.

Cool-season grasses such as Kentucky bluegrass or tall fescue are among the most common cool-season grasses needing attention ...