Todd,
I started my planting my clover/WR the other day using throw-n-mow. It is mostly because I'm time limited and won't have time later. If I didn't have time limitations, in our zone, I would start looking at the forecast on Labor Day weekend. As soon as I saw rain in the forecast I'd plant WR/clover plots. If I got to about the middle of September or so, I plant whether I saw rain or not. WR is the attractant the first fall. It is most attractive when it is young and succulent. By waiting until September to plant, it stays young longer into our firearm season and beyond. It takes a couple weeks for deer to start hitting it, so if I get it in by the middle of September or so, deer are using it when our archery season begins.
Thanks,
jack