I live in Oklahoma, and in early October, the weatherman finally told us we could expect a little rain. We've been clearing trees and brush out of our pasture - it was completely overgrown - almost no grass at all on our 15 acres. Son in law bought a bag of a mix if annual rye grass and hard red winter wheat. He only paid about $15 for it. As an experiment, he broadcast seeded it over some bare ground. In a few days, it started turning green, but it was awfully thin.
In late October, we finally started getting some more serious rains. Son in law bought a 50# bag of straight ryegrass seed, and broadcast it over about a two acre section. It's about 6 - 8 inches tall, now, and we've turned the horses in on it for a couple of hours now and again. Will need to turn them in again pretty soon. We've had a freeze, but I guess it hasn't been hard enough to hurt the grass, but I don't want it to go to waste.
Funny thing - when we first turned the horses out on the new grass, they munched on it for a few minutes, then took off to the back side of the property. We couldn't figure out what was back there, as it was mostly still trees (work in progress) and bare ground. We walked back there and the bare ground isn't exactly bare anymore.
When DH and I first moved to that property in 1984, the pasture was lovely and clear - and full of bermuda grass. After DH had his stroke, we let the pasture pretty much go to wrack and ruin. Now that we have a chunk of it cleared out...there are patches of bermuda grass showing up again! We have no idea how that came to be, but it's definitely there. There was a large-ish patch of it growing by the pond, where there were no trees, but there is some coming up 25 - 30 yards away from there - and more coming up along the back fence - nearly 1/4 mile from the pond! All we can think of is that there must have been a few rhizomes here and there that were dormant, but not quite dead. Clearing out the trees let the sun in, and in spite of our awful drought, the bermuda grass began to grow again.