When to plant onions in zone 10a
In zone 10a, the last spring frost usually comes around Jan 31 and the first fall frost around Dec 20. Here is when to plant onions.
Sow in the bedJan 3
Start pickingApr 13
Your onion (from sets) calendar for zone 10a
- Jan 3: Plant onion sets in the bed
- Apr 13: Start picking onions
Plant small bulbs ("sets") pointy end up. Harvest when the tops fall over.
Spacing in a raised bed: 9 plants per square foot.
These dates are estimates from the average frost dates for zone 10a. Your local frost dates may be a week or two different. If a late cold snap is forecast, wait a few days.
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