When I can get a bunch of onion starts (already germinated and ready to plant) I use them to get a quick start on growing onions in a garden.
When starts aren't available, I start from seeds, which is slower and makes transplanting a bit tedious, In 2026 I terminated onion seeds in my grow tent and them set them out in the garden. This seemed to result in a large difference in the size of the harvested onions.
First I pull the mature onions from the ground.
Next I lay the mature onions on some cardboard in the open to dry out.