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Fruit and Vegetable Gardening A-Z: Onions

A Guide to Gardening, Growing and Harvesting Edibles
  -- By Jenny Sigler, SparkPeople Contributor
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.

Conditions:
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.

Maintenance:
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:
No

Life Cycle:
Annual

Difficulty Rating (1-5):
2