Do melons need to climb to produce good fruit? The short answer is no. Melons grow just fine on the ground without any support at all. You can train them up a trellis if you want, but melon vine growth is natural on flat ground.
I watched my watermelon vines take over half my garden last summer without any help from me. They spread out over 15 feet in every direction right along the soil. The plants never tried to climb the fence just three feet away. They wanted to stay low and that worked out great for the fruit.
Melons have tendrils like other vine crops but they use them more for anchoring than climbing. Cucumbers will race up a trellis on their own since they have strong climbing drive. Melon vines will grab a support if you tie them there, but they won't seek it out. The tendrils just help hold the vine in place on the ground.
Watermelon vines spread 6-20 feet along the ground with ease. This is just normal melon vine growth for these plants. The sprawling habit lets vines cover ground fast and shade out weeds. Leaves also protect fruit from sunscald on hot summer days.
Growing melons on trellis is a choice you make based on your space not a need the plant has. Small gardens can fit more plants when vines go up instead of out. You might get 75% more growing room by training plants to climb instead of sprawl. This trade makes sense when every square foot counts.
Trellised melons need extra help that ground plants never require. You must tie vines to the structure as they grow since they won't climb on their own. Fruit needs slings or mesh bags once it gets heavy. Without support the weight will snap stems and drop your harvest early.
I tried both methods in the same season to compare results. Ground melons needed less daily work from me. Trellised melons stayed cleaner and had fewer pest issues. Both gave me good fruit so neither method failed. Your time and space should guide your choice.
Let your melons sprawl if you have 20+ square feet per plant and want easy care. Train them up if space is tight and you can check on them daily. Both approaches produce sweet ripe fruit when you meet the plants basic needs for water, sun, and warm soil.
Some gardeners put melons on trellis just because it looks nice in the garden. Watching fruit hang in the air feels special compared to hunting through leaves on the ground. This reason is valid even if it takes more work. Grow your garden the way that makes you happy.
Read the full article: Growing Melons: 9 Reliable Steps for Sweeter Results