I’ve decided I just can’t grow onions in our soil worth a darn... :-(
Bulbs cut off the bottom of spring onions do ok in pots for me, indoors with lots of light, including in the winter. In the garden they get about 8-10” high and die. I have no idea why. Tomatoes and okra (and weeds, of course!) in the same spots do fine.
Rats.
West Michigan. I buy a bag of bulk onion sets and grow them in the summer. In all my big containers there’s a ring of them on the outer edge. They all get pulled, cleaned, chopped and frozen in meal size baggies for the winter. About a good size handful. Enough to add to a skillet dish or pot of soup. I let them dry a bit before I do this. Never have to buy any at the store. I have about 18 bags so far. I keep the veggies in a larger freezer bag with a zipper. Unless you have solid clay they should grow for you.