Desirable plants seem easy to destroy. Weeds are more difficult. Lesser celandine, Ranunculus ficaria, will likely survive a nuclear blast. Friends at the Leonard J. Buck Garden in Far Hills, New Jersey tried spraying with Roundup 3 times in one season . Slowed it down but did not destroy it. I dug up several gallons, complete with soil around the tiny tubers. Put in a heavy duty black plastic garbage bag, then placed in full sun on an asphalt driveway. After close to a week the leaves are still green and vibrant. Not allowed to dispose of in trash - also envision it carpeting the landfill transfer station. Afraid to feed it to my neighbor's sheep who get garlic mustard and multiflora rose. If not completely devoured the lesser celandine would escape and carpet the pasture, then spread to cover the neighborhood. All suggestions gratefully received. And no, I don't think it is suitable for the dinner table. Judy