[header] How to grow winter onions [title] Prepare your plot in the late summer or autumn. [step] You can plant your sets as early as august, but many gardeners prefer to wait until october, when the weather has significantly cooled. You can even plant your sets in the early winter, as long as the ground has not become solid yet. 
[title] Select a sunny spot in your garden. [step] Winter onions are hardy enough to grow in a variety of conditions, but they prefer to soak in full sun.