I've never tried it, although I've been tempted. As I recall, there's a guy out of Oklahoma named Dalrymple that sells the seed it and I think the Noble Foundation in Oklahoma either sells it or has extensively studied it. Apparently it is a very high quality forage for warm/hot weather parts of the country, high protein and digestability. And it will essentially perform like a perennial if it is allowed to re-seed in late summer, but of course that requires grazing mgmt. since the cows are so fond of it and would otherwise graze it continuously. Maybe some of our Oklahoma members can shed some real light on the subject.