

Pre-emergent herbicides need to be watered in to work effectively, so a good watering or rainfall 24 hours after application is helpful.Wait 1224 hours after applying a crabgrass preventer weed and feed before you water.So, watering your lawn as few as 12 hours after application typically isnt a problem. Pre-emergent herbicide needs to be watered into the ground in order to form a chemical barrier that kills seeds as they sprout. However, weed and feed with pre-emergent herbicides are more forgiving than products with post-emergents. Its best to wait 24 hours before watering a lawn where youve applied weed and feed with pre-emergent crabgrass preventer.

When Should You Water After Applying Weed & Feed With Pre
