This year mine were decimated by squirrels and a gopher. However... I had some green onions I bought at the store and forgot to use. They got all nasty and slimy. Rather than throw them out, I washed them off and planted them. They grew so big that they flowered. Now I'm not sure what to do with them? Do I leave them to overwinter? Pull them? Are green onions edible at any size? The ones I've always used were the thickness of a pencil. These are probably the thickness of a chair leg. No joke.I never managed to grow onions in containers. try to till a piece of land and plant them there. I think you are not late to do it now. frost will not kill onions. just harvest them on a sunny day.