I have only recently discovered this was edible. It grows all over around here, and I always weeded it out of my garden. Now that I find it's a good thing, it will probably stop growing! Member of the mustard family.
One weed we have here in South Alabama is Florida Betony or Rattlesnake weed. It has long tubers shaped like rattlesnake rattles and these tubers are edible and can get quite big.
