[header] How to store garden onions [title] Harvest your onions when the leaves droop and turn brown. [step] Waiting until the leaves are like this will ensure your onions are the right size for storage. To harvest your onions, dig the bulbs out of the ground using a shovel or large fork. 
[title] Let your onions dry outside for 1 week. [step] You can lay the onions on the soil you dug them out from, or put them on a wire rack.