Is it too late to plant grass seed?
Yes, it is 2 weeks too late to plant grass seed in Pennsylvania. The best seeding window for your area is August 20th thru October 10th. Seed planted later than that may not germinate properly, and if it does start to grow it may not get established enough to handle the soil’s heaving action with winter’s freeze-thaw cycles. Your next opportunity to seed will be Spring, if you can seed without applying pre-emergent for crabgrass control or any other weed killers, since these products will be detrimental to your seeding efforts. Fall is the best time to plant grass seed in your area.
