Michigan they're a weed..lol... I have been laughing at some of the plants at the farmers markets that were at one point I thought were weeds and just ripped up are going for 5 bucks a plant. I don't rip them out any more. this now gets added to the list. lol
I have been researching all of the plants I got free, when we first moved here, and almost all of mine are edible. I haven't tried them, yet, but I will slowly start digging up my plants to taste!~ Maybe I will be at the farmers market next year, trying to sell my day-lilies and purple bells as tubers! ("Taste just like potatoes" ~~LOL)