I know of a farm in my hometown in Michigan that has hops growing like crazy all over playground equipment and there barns. I know they do not sell them and I'm almost certain they dont even want the plants there. If i can convince them to let me get the rhizome off the hops growing there i want to grow them in my backyard. How do i go about getting the rhizome? Do i just dig around to find the roots and take a piece from near the crown?