For years we have been planting a patch of green onions we plant them close together in a bed and harvest them 3 or more times a year. We havent bought any in years and putting them up is actually a fun activity. Here is the report on how we do it. This crop was 6 square feet in our lil garden box.

Cappy & Pegody's World: Rotating Our Green Onions (...or the 'something-something of the Traveling Plants')