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Small watermelons grow best when you choose the right variety, give them plenty of sun, and harvest them at the perfect moment.
If you’ve been wondering how to grow small watermelons, you’re in the right place because these compact fruits are easier to manage than their giant cousins.
They fit nicely in small gardens, raised beds, and even large containers on a patio.
The key is understanding what makes small watermelons thrive from seed to harvest.
In this post, we’ll walk through how to grow small watermelons step by step, covering variety selection, planting, care, and harvesting.
Let’s dig in.
How to Grow Small Watermelons: The Basics
Growing small watermelons starts with picking the right type and giving them a warm, sunny home.
Here’s what matters most when you grow small watermelons:
1. Choose a Compact Variety
The first step in how to grow small watermelons is choosing a variety bred to stay petite.
Look for types like Sugar Baby, Golden Midget, or Jade Star.
These small watermelons typically weigh between 3 and 8 pounds, which makes them perfect for small spaces.
Some varieties are called “icebox” watermelons because they fit neatly in the fridge.
When you grow small watermelons, picking the right seed sets you up for success from day one.
2. Give Them Full Sun
Small watermelons need at least 6 to 8 hours of direct sunlight every day.
The more sun, the sweeter the fruit will be.
If you’re growing small watermelons in containers, place them where they’ll catch the strongest rays.
Shade will slow growth and reduce sugar production, so avoid it whenever possible.
3. Use Warm, Well-Draining Soil
Small watermelons love soil that drains well and stays warm.
A sandy loam with plenty of organic compost works beautifully.
The ideal soil pH for growing small watermelons is between 6.0 and 6.8.
If your soil is heavy clay, mix in compost to improve drainage before you plant.
4. Start Seeds Indoors or Direct Sow
You can grow small watermelons either way, depending on your climate.
In cooler regions, start seeds indoors about 3 to 4 weeks before the last frost.
In warmer areas, direct sow small watermelon seeds once the soil hits 70°F.
Either method works well as long as the soil stays warm.
5. Space Plants Properly
Even though they’re small, watermelon vines still need room to sprawl.
Space small watermelon plants about 2 to 3 feet apart in rows that are 6 feet apart.
If you’re growing small watermelons in containers, choose a pot that holds at least 5 gallons of soil.
Proper spacing keeps airflow moving and helps prevent disease.
Caring for Small Watermelons as They Grow
Once your small watermelons are in the ground, consistent care is what turns tiny seedlings into sweet fruit.
1. Water Deeply but Not Too Often
Small watermelons need about 1 to 2 inches of water per week.
Water deeply at the base of the plant so the roots get a good soak.
Avoid wetting the leaves, since damp foliage invites mildew.
As the fruit ripens, cut back on watering slightly to concentrate the sugars.
2. Feed Them Balanced Nutrients
Apply a balanced fertilizer when the vines start running.
Switch to a low-nitrogen formula once flowers appear, because too much nitrogen gives you leaves instead of fruit.
When you grow small watermelons, a little potassium and phosphorus goes a long way.
3. Hand Pollinate if Needed
Bees usually handle pollination, but sometimes they need help.
If your small watermelons aren’t setting fruit, try hand pollination.
Pick a male flower, remove the petals, and dab pollen onto a female flower’s center.
Do this in the morning when flowers are open and fresh.
4. Watch for Pests and Disease
Aphids, cucumber beetles, and squash bugs love watermelon vines.
Keep an eye out and remove pests by hand or use insecticidal soap.
For disease, watch for powdery mildew and wilt, and rotate crops each year.
Healthy small watermelons resist problems far better than stressed ones.
Harvesting Small Watermelons at the Right Time
Knowing when to pick your small watermelons is just as important as knowing how to grow small watermelons.
Here are the signs to look for:
1. The Tendril Test
Find the curly tendril closest to the fruit.
When it turns brown and dries up, your small watermelon is ready.
This is one of the most reliable signals for how to grow small watermelons successfully.
2. Check the Field Spot
The spot where the small watermelon rested on the ground should turn creamy yellow.
If it’s still white or green, give it more time.
3. Thump and Listen
Give the fruit a gentle thump.
A ripe small watermelon sounds hollow and deep, while an unripe one sounds dull.
Combine this with the other signs for the best results.
4. Look at the Skin
The skin should look dull rather than shiny when your small watermelons are ripe.
The stripes will also become more pronounced as maturity sets in.
So, How to Grow Small Watermelons?
Small watermelons grow best when you choose a compact variety, give them full sun, and care for them consistently.
If you’ve been wondering how to grow small watermelons, the process really comes down to warmth, water, and patience.
Pick the right seed, keep the soil warm, water deeply, and harvest when the tendril dries.
With these steps, you’ll grow small watermelons that are sweet, juicy, and perfectly sized for your table.