When is the ideal time to apply a pre-emergent and how long do I have to wait to before I can apply grass seedn in same area?
Jackson County Michigan
if you use pre-emergents you would not be able to seed until mid to late August. If you want to seed this spring go ahead and get it growing and next year worry about the crabgrass control in the spot you seeded. The best time to apply it is just before it germinates. Basically it coincides with forsythia bloom. As soon as you see forsythia bloom, apply pre-emergent crabgrass control.