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Yes, you can grow watermelon in Missouri, and many gardeners across the state do it successfully every summer.
Missouri’s warm, humid summers and long growing season give watermelon vines plenty of time to sprawl, flower, and set fruit.
If you’ve been wondering whether you can grow watermelon in Missouri, the short answer is a confident yes with the right variety, timing, and a little patience.
In this post, we’ll walk through why watermelon grows well in Missouri, the best varieties to pick, and how to keep your vines happy from planting to harvest.
Let’s dig in.
Why You Can Grow Watermelon in Missouri
You can grow watermelon in Missouri because the state’s climate checks most of the boxes this heat-loving fruit needs.
Here’s why it works so well.
1. Missouri Summers Are Hot Enough
Watermelons thrive when temperatures sit between 70°F and 90°F, and Missouri delivers that kind of heat from June through August.
Those long, steamy days push vines to grow fast and fruit to sweeten up nicely.
If you can grow watermelon in Missouri during a normal summer, you’ll usually get fruit that’s just as sweet as anything from a grocery store.
2. The Growing Season Is Long Enough
Most watermelon varieties need 70 to 90 days from planting to harvest, and Missouri’s frost-free window generally runs from mid-May to early October.
That gives you roughly 140 days or more, which is plenty of time for most watermelons to ripen.
You can grow watermelon in Missouri without rushing the season as long as you plant after the last frost.
3. Missouri Soil Can Support Watermelon Vines
Watermelons love loose, well-drained soil rich in organic matter, and many parts of Missouri offer exactly that.
If your soil is heavy clay, just amend it with compost before planting.
Good drainage matters because watermelons hate soggy roots, and Missouri’s occasional heavy rains can cause problems if the ground doesn’t drain well.
Best Watermelon Varieties to Grow in Missouri
Choosing the right variety makes a huge difference when you grow watermelon in Missouri.
Some watermelons need a longer season than others, so short-season types are your safest bet.
1. Sugar Baby
Sugar Baby is a classic icebox watermelon that matures in about 75 days.
It’s perfect for Missouri because it ripens quickly and produces small, sweet fruit that’s easy to handle.
2. Crimson Sweet
Crimson Sweet takes around 85 days and yields large, striped melons with deep red flesh.
It’s a reliable choice if you want to grow watermelon in Missouri for big summer cookouts.
3. Charleston Gray
Charleston Gray is a Southern favorite that handles heat and humidity well, which suits Missouri nicely.
It matures in about 85 days and produces long, gray-green melons with sweet pink flesh.
4. Jubilee
Jubilee needs around 90 days but rewards you with large, oblong melons and excellent flavor.
Plant it early if you want to grow watermelon in Missouri with this variety.
How to Grow Watermelon in Missouri Successfully
Once you’ve picked your varieties, a few smart steps will help you grow watermelon in Missouri like a pro.
1. Plant After the Last Frost
Wait until soil temperatures hit at least 70°F, usually around mid-May in Missouri.
Cold soil stunts watermelon seedlings, so patience here pays off.
2. Give Vines Plenty of Space
Watermelon vines sprawl, so plant them in hills about 6 feet apart.
Crowded vines compete for nutrients and airflow, which invites disease.
3. Water Deeply but Not Too Often
Watermelons need about an inch of water per week, especially while fruiting.
Soak the soil deeply and let it dry slightly between waterings to discourage rot.
4. Watch for Pests and Disease
Missouri’s humidity can bring on powdery mildew and cucumber beetles.
Keep leaves dry, space plants well, and check vines often so problems don’t spread.
So, Can You Grow Watermelon in Missouri?
You can grow watermelon in Missouri, and with the right variety and timing, you’ll harvest sweet, homegrown fruit by late summer.
Missouri’s hot summers and long growing season make it a great place for watermelon vines to thrive.
Pick a short-season variety, plant after the last frost, and give your vines sun, space, and steady water.
Hope this post has helped you see that you can grow watermelon in Missouri with confidence and a little planning.