With our mild frost free Winters and warm wet Summers, onions generally don’t do well in the subtropics. They are cool-weather growers, and need a bit of chill to form bulbs. I have tried about six different varieties from seed, plus leeks and chives, and have had good results only from white bunching onions, meaning that these might be the subtropical onions for me.
Read MoreGrowing onions in the subtropics
