I have a ton of this stuff growing around here, and it's super easy to just yank the whole plant clean out of the ground, cut the root off, and toss it in a cage, and the rabbits seem to really love it. Been using it sparingly because I don't know how "safe" it is. I know the wild bunnies eat it pretty often so it can't be too bad...
Am I safe using this more often/offering it freely?
Am I safe using this more often/offering it freely?