When is the best time in spring to use a lawn fertilizer with a pre-emergent herbicide? - Cooperative Extension: Garden and Yard - University of Maine Cooperative Extension

Question: I would like to know the best time in spring to use a lawn fertilizer with a pre-emergent herbicide? Answer: Dave Fuller, Agriculture and Non-timber Forest Products Professional Pre-emergent lawn herbicides need to he applied before the soil temperatures reach a point where the weed seeds begin germinating. A great indicator for timing is read more