In Egypt they were worshipped before the Christian era, and in Britain onions also played a part in the Druid rites. Onions are cool-season vegetables and grow successfully in Arkansas gardens. They may be grown from transplants, sets or seeds, but transplants or sets are best suited for Arkansas. In all three methods, the onions are planted as soon as the garden can be tilled in February through April. Good fertility, adequate moisture and cool temperatures aid development.
Onions start bulb formation when the day length is of the proper duration.
Different varieties of onions require different day length to initiate bulbing. High temperatures and low humidity are advantageous during bulbing and curing. Onions are shallow-rooted and compete poorly with weeds. Timely, shallow hoeing and cultivation are important, especially when the onions are small. Sources There are many different sources for these cultivars.