Crabgrass prevention timing
March 1, 2022
Time for crabgrass prevention: The threat temperature for application of pre-emergence herbicides for crabgrass control occurs at an air temperature of 52°F (11°C). In warmer locations, that time has come, and in cooler climates, it will occur sooner than you think. See our Crabgrass Reference for detailed information on timing, herbicide efficacy, photos and more.…