- Long Day - bulb sets when it receives 14-16 hours of daylight and is adapted to Northern summers;
- Short Day -bulb sets with about 12 hours of daylight and are used in the deep South for winter production;
- Intermediate - Maryland Zone 7 community gardener's can experiment with all groups, although long day and intermediate types will probably perform better in our area.
This is an excerpt from our new Vegetable Garden Plant Page on the Havre De Grace Green Team website. For more information on Onions and other Vegetable Garden Plants please see us at: