Today, July 1, 2011, I harvested our little (big for us!) plot of onions. In a 4′ x 8′ space there were 24 pulled at harvest time, about 5 pulled earlier in the season to eat as needed, and three remaining to reproduce for next year. One of those has begun to form seeds and another looks like it is beginning to produce bulbs underground by splitting into many.
The onions that were planted closest to a two-story building got considerably less sun and it is visible in the size of the bulbs ~ they are MUCH smaller. Earlier in the season, the shorter daylight exposure slowed the formation of bulbs making the onions look like humungous chives!