AlliumsAmaryllidaceae

Onions.

Cool seasonDeer-resistant
Botanical illustration of onions
At a glance

The spec sheet.

Indoor start
Feb 1–15
Direct sow / out
Apr 1–15
Germ
7–10 days
Days to harvest
100–120
Spacing
4"
Depth
¼" (seed), 1" (transplant)
Square-foot
9 per square
Qty target
100+ for daily cooking + winter storage.
In our garden

Where onions grows here.

This crop is planted in 1 bedright now. Click through to see the full layout and what it’s planted with.

Plant

Sow thick in trays under lights; trim tops to 3" for stocky plants. Transplant when pencil-thick, spacing per bulb size.

Care

Shallow roots — hand weed, water weekly. Stop watering when tops flop.

Harvest

When 50–75% of tops flop; pull on a dry day, cure 2–3 weeks in a shady, airy spot.

Preserve

Cured storage onions hold 4–6 months cool & dry. Also frozen diced, dehydrated flakes, caramelized-and-frozen cubes.

Companion planting

What onions likes, and doesn’t.

Avoid nearby

More in this family

Also in the Alliums.