When to plant watermelons 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 watermelons.
Sow in the bedMay 26
Start pickingAug 19
Your watermelon calendar for zone 4a
- May 26: Sow watermelon seeds in the bed
- Aug 19: Start picking watermelons
Choose a small "icebox" kind for raised beds. Needs a long, hot summer.
Spacing in a raised bed: 1 plant per 2 × 2 ft.
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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