I'm sure everyone can figure out how to pull onions. The best time to do this is when
the leaves have flopped over. This is when the plants stop growing and start preparing for winter.
You can lay the plants on top of the soil where you pulled them up if the weather is going to be dry. The necks will begin to tighten and the foliage yellows. Let them dry for a week or two. If your weather is wet or frost is possible, harvest your onions and move them where they will stay dry.
Spread the onions out in a single layer and let them “cure” for two weeks. During this time the necks will wither and turn brown, and the papery skins will tighten around the bulbs. Once the necks have dried and there’s no more moisture in the stem or leaves, you can bring your onions indoors and store them in mesh bags or bushel baskets. Keep them cool (35 to 45 degrees F.) and away from light.
I pulled mine and hung them on a piece of fencing to cure.
Now I have to figure out what to do with all my potatoes. My basement stays cool but not 50-60 degrees cool.