
When to plant radishes in zone 4a
In zone 4a, the last spring frost usually comes around May 12 and the first fall frost around Sep 21. Here is when to plant radishes.
Sow in the bedApr 7
Start pickingMay 5
Plant again for fallAug 10
Your radish calendar for zone 4a
- Apr 7: Sow radish seeds in the bed
- May 5: Start picking radishes
- Aug 10: Sow radish seeds again for a fall crop
Ready in about four weeks. Great for kids and impatient gardeners.
Spacing in a raised bed: 16 plants per square foot.
These dates are estimates from the average frost dates for zone 4a. 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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