If weeds were edible (and I guess some are) there would be no world food problem. I could probably feed all of Bangladesh out of my little garden plot, at least this year I might've as they seemed especially vigorous and fast-growing.
I know there are many schemes to avoid or defeat weeds, but next year I am going to try a containerized garden. I have quite a few of those heavy-duty "lick tubs" that ranchers use to feed specialized nutrients to their cattle. One of my neighbors has a huge stockpile of the really good ones (heavy resin or plastic construction— almost indestructible) and said I could have all I want.
So Jack and I took a ride today. Only about 25 miles round trip, but we ended up with some nice containers for next year, and the promise of more if we want them.