When to Plant Watermelon in Missouri: Best Months and Last Planting Date
Plant watermelon in Missouri from late April in the south to late May up north. Get region-by-region dates, the too-late cutoff, and variety picks.
by admin
watermelon Missouri state planting
When to Plant Watermelon in Missouri
Plant watermelon in Missouri after the last frost and once soil has warmed to at least 65 degrees F. Missouri ranges from milder southern counties to cooler northern counties, and river bottoms and hilltops can differ in frost risk. For many Missouri gardens the practical outdoor window is late April into May.
Southern Missouri can often plant in late April. Central Missouri usually fits early to mid May. Northern Missouri may need mid to late May, especially after a cold spring. Use the watermelon by zone guide with your local frost date before planting.
Missouri Timing Notes
- Start seeds indoors 3 to 4 weeks before your outdoor date if the season feels short.
- Harden off transplants — set them outside a little longer each day for about a week — before planting.
- Use black plastic or row cover (a light garden fabric that holds in warmth) to warm soil in a cool spring.
- Pick an early or compact variety if the first fall frost arrives early.
Is It Too Late to Plant Watermelon in Missouri?
In southern Missouri, a 70 to 75 day short-season variety planted by early July can still ripen before the mid to late October frost. In central and northern Missouri, treat late June as the realistic cutoff. Past those dates, a large nursery transplant is the only late option worth trying.
Next Steps
Check your county last frost date and soil temperature. In Missouri, a strong warm transplant set into warm ground beats seed rushed into cold soil.