Growing Watermelon in a Container: Choose Small Varieties and Trellis

Yes, You Can Grow Watermelon in a Pot

Watermelon roots aren’t extremely deep, so a large container works—if you manage the vines.

Container and Soil

• Pot: Minimum 15–20 gallons (half whiskey barrel, large fabric pot).
• Soil: High-quality potting mix (no garden soil). Add compost at planting.
• Drainage: Ensure holes; add 1 inch gravel at bottom.

Varieties for Containers

Choose “icebox” or personal-size melons (5–15 lbs):

• ‘Sugar Baby’
• ‘Golden Midget’
• ‘Mini Love’
• ‘Little Baby Flower’

Avoid giant varieties—they need too much space and water.

Trellis the Vines

Watermelon vines run 8+ feet. Train them up a sturdy teepee, trellis, or cattle panel. Support developing fruit with slings (old t-shirts, mesh bags) tied to the trellis.

Planting and Care

• Plant 3 seeds, thin to 2 strongest.
• Water consistently—never let soil dry out.
• Fertilize: balanced liquid every 2 weeks until fruit set, then switch to low-N, high-K.
• Pollinate by hand if bees are scarce (transfer pollen from male to female flowers).

Harvest

Melons are ready when the tendril nearest the fruit turns brown, the bottom spot turns yellow, and a tap sounds hollow.

With a big pot, a trellis, and a small variety, you can enjoy homegrown watermelon on a patio or deck.