Fruit and Vegetable Gardening A-Z: Onions

Countless healthy recipes and cooking techniques call for onions. There are three kinds of onions: short-day, intermediate-day and long-day. Make sure the varieties you choose match up with your hardiness zone.

Hardiness Zones:
4-11 (Find your hardiness zone.)

When to Plant:
Purchase onion sets from a nursery and set them out in the garden in mid to late March. Dig a small hole for each bulb and plant it (neck upward). Cover it up with soil, allowing the tip of the neck to show through the soil surface.

Prepare the soil in advance with at least 2-4 inches of compost and well-rotted manure. Onions can deal with either thick or well-aerated soil.

Space Needed:
Plant each bulb about 10 inches apart in rows 30 inches apart.

Be sure to keep the area weeded.

When to Harvest:
It's very easy to tell when onions are ready for harvest. A week after their tops yellow and then drop over, they are fully-grown! Loosen the soil with a garden fork and lay the onions on the ground to dry for a few days before using them.

Average Yield:
One onion bulb can grow to about 1-2 pounds, depending on variety.

Continuous Yield:

Life Cycle:

Difficulty Rating (1-5):