Grass - Ask Extension
Crab grass control time
Knowledgebase
Grass #929204
Asked April 22, 2026, 10:17 AM EDT
Crab grass control time
Kent County Michigan
Expert Response
Thank you for your question. It is getting very late to apply crabgrass preventer. You should bookmark the attached link to GDD Tracker. Enter your zip code to see you location on the map. More info in the attached links:
GDD Tracker
Pain In The Grass: Crabgrass
Spring Crabgrass Prevention Timing & GDD-MSU
Common Questions-Crabgrass & Pre-Emergent-Purdue
Get your pre-emergent down quickly and water it in with 1/2" of water so it's in the soil surface to prevent crabgrass germination which will begin to germinate when the average daily soil temperatures reach 57 to 64 °F at a one-inch depth.
GDD Tracker
Pain In The Grass: Crabgrass
Spring Crabgrass Prevention Timing & GDD-MSU
Common Questions-Crabgrass & Pre-Emergent-Purdue
Get your pre-emergent down quickly and water it in with 1/2" of water so it's in the soil surface to prevent crabgrass germination which will begin to germinate when the average daily soil temperatures reach 57 to 64 °F at a one-inch depth.
