Most onions can be planted from seed from April 1 to June 1, March 20 to June 15, and March 10 to July 1 for eastern, central, and western Kentucky.

Plant seeds at a depth of 1/4 to 1/2 inch.

Onion sets can be planted in the spring, March 15, March 10, and March 1 in eastern, central and western Kentucky.

Plant sets at a depth of 1 to 2 inches deep.

Final plant spacing should be 4 inches.

Bulb onions can tolerate partial shade.

If planting in a container it should be 6 inches deep.

2.5 lb/100 sq ft of a 5-10-10-10 fertilizer should be enough for a small garden.

10 lbs of a high nitrogen fertilizer (eg. 33-0-0) should be applied 1 to 2 weeks after bulbs start to form.

The garden will need 1 inch of water a week, including rain. Take special care when the bulbs are enlarging.

Onions can be outcompeted by faster growing weeds. Ensuring that the bed has no weed seeds and preventing weed growth is best. If weeding, be careful not to pull small onion plants accidentally.

Onions are ready for harvest 40-120 days after seeds are planted. This will be about when 2/3 of the tops have fallen over. Wait until tops have turned brown and died for longer storage time.

To harvest, loosen plants with a fork and remove them from the soil whole.