I planted a meadow in my back yard instead of part of my lawn. I think the seed mixture I used had a few plants of alphalfa and I think I am going to wet it really good and pull that crap out by the roots. It seems like I have to dig around it a bit first to loosen the to and then it does indeed seem to have like a 3 foot root. I would NOT plant aflalfa in your front yard or any part of your yard for goats. There has to be something better. The roots are no kidding 3 feet long.