Last date to apply winterizer-SE VA zone7
I am unsure as to how late I can wait to apply my winterizer. I have tall fescue, pretty much a new lawn since about all my grass died in the 105 deg F heat this summer. I had a new irrigation system installed(winterized now) and seeded on Oct. 22, starter fertilizer then. I also applied my 2nd fertilization with Scott's fall lawn turf with Wintergard on Nov. 8. So I'm racing the temps and frosts to get these seedlings established prior to colder weather. The new grass is sprouting well, not up to 3 inches yet. Our present daytime temps are mid-60s, night into 30's. I have a bag of Lesco Fall/Winter 18-0-8 fertilizer yet to apply, with 5.8% slow release N. Wondering how late I can wait to apply this.
Thanks for advice,
Debra in SE Virginia