Really useful article on onions:
http://plantanswers.tamu.edu/publications/onions/oniongro.html
I know things are bigger in Texas, but "most gardeners want to grow an onion bulb as large as a basketball" :P
Blimey. Do you think they meant baseball?
I was always told take the flower bulb off straight away to allow the onion to grow, this now doesn't seem to be the case. Any body got any info or ideas on this. ??? :-\ ;D ;D ;D