Crabgrass in New Sod: Why It's Usually a Temporary Problem

Annual Crabgrass? Don't Sweat It—Just Don't Let It Seed

Crabgrass appearing in month-old sod is common. Tilling before sodding brings dormant weed seeds to the surface where they germinate. The good news: most crabgrass is an annual. It dies with frost. The critical rule: never let it flower or set seed.

Simple Management

• Mow high and often—removing seed heads before they mature.
• Hand-pull visible plants (easy in soft sod). Compost them.
• Overseed in fall with desirable grass to thicken the lawn.

If the grass type and region allow, selective post-emergent herbicides (like quinclorac) can be used, but they're rarely necessary for annual crabgrass. Perennial grassy weeds (like dallisgrass or bermudagrass in cool-season lawns) require different strategies—identify before treating.