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Onion
Plant Detail
Onion
| Scientific name | Allium cepa |
| Common name | Onion |
| Type | Vegetables |
| Variety | Perennial |
| USDA Zone hardiness | 2a - 10a |
| Exposure | Full sun |
| Height | Under 1' |
| Spread | Under 1' |
A cool-season vegetable that can be grown throughout most of North America. Onions may be grown from sets, transplants or seeds. Onions start bulb formation when the day length is just right, different varieties of onions require different day lengths to develop. Most varieties fall into one of two classes, long-day best suited for northern latitudes and short-day for southern latitudes. Onions do not compete well with weeds so keep your garden managed.
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