Hi Y'All, Here I am back with a couple more questions. Last year, when I was mowing, there was a little patch of "Crown vetch", at the bottom of a tree. It looked real pretty when it was blooming. So, I left it. Just that one little patch., This year, as I mow, I noticed that there are sprouts of it spread out, over about a 40x40' area. Is it a "Noxious Weed"? Do I need to sterilize the soil in that area to get rid of it? Is it Okay for Cattle & Horses, to have it in the pasture? I know it's a legume, and fixes nitrogen in the soil. Will it take over, my rolling hills, kill out the grasses, & Clovers I have established? How fast CAN it spread Can I contain it with Mowing? Kinda looks like NOT. Thanks for your info. Web searches seem to turn up widely VARIED opinions, pro & con.