
When to plant green onions in zone 3a
In zone 3a, the last spring frost usually comes around May 20 and the first fall frost around Sep 10. Here is when to plant green onions.
Sow in the bedApr 22
Start pickingJun 21
Plant again for fallJun 28
Your green onion calendar for zone 3a
- Apr 22: Sow green onion seeds in the bed
- Jun 21: Start picking green onions
- Jun 28: Sow green onion seeds again for a fall crop
Snip what you need; they regrow from the roots.
Spacing in a raised bed: 16 plants per square foot.
These dates are estimates from the average frost dates for zone 3a. 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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