If you haven't tried these they are wonderful for the food forest, or for any garden for that matter. If you know of someone who has them, they'll happily give you starts, as they are prolific multipliers. They multiply below ground, and above ground on tall stems. They grow these clumps of baby onion sets in t he summer on top of a long stem, that will dry and bend over so that the clump touches the ground. Each tiny little onion on the clump will grow a new onion plant. The bottoms will never get as large as a big onion, but they are good eating. And even the little top sets can be pickled if you have too many. In Spring they produce green onions that are wonderful in salads.
This year I had so many, even after replanting hundreds, giving hundreds away and walking through my food forest paths (see other posts) and sticking little sets in all along the forest paths, gurilla gardening style.