Why Are Watermelon Leaves Curling?

When watermelon leaves curl it could be a result of a disease or over watering. Watermelon leaves curling is a symptom synonymous with some sort of disease.

Watermelon plants like to be watered regularly and consistently; however, overwatering can lead to the death of a watermelon plant. The curling of the leaves is how the disease shows itself.

High temperatures

If watermelon leaves are curling, it’s likely a result of high temperatures. The leaves are sensitive to heat and will curl up in order to protect themselves from the harmful rays of the sun. 

This is especially true if you live in an area where temperatures regularly reach 85 degrees or higher during summer months.

Watermelons are warm season plants that do not tolerate cold weather very well at all, so you should take note if your watermelons begin to curl their leaves under hot conditions.

You can also check with seed suppliers who may have information about what growing zones/temperatures correspond with a good chance for successful growth for this plant type.

This will help make sure that your garden has enough shade protection from hot sun rays and isn’t exposed to frosty nights when temperatures drop too low for fruit production.

Too much fertilizer

If you find that your watermelon leaves are curling, it is likely that you have used too much fertilizer. Fertilizer is important for growing a healthy plant, but too much of it can be harmful.

Too much fertilizer can lead to many problems, including stunted growth, leaf discoloration and even death of the plant itself.

If you suspect that your watermelon has been over-fertilized by an excess of chemicals in the soil or by allowing too much nitrogen-rich material like manure or compost to build up on top of the soil around its roots (soil crusting), there are some steps you can take to correct this problem before it becomes worse:

Too much water

Watermelon leaves curling can be caused by a number of things, but one of the most common reasons is excessive watering. Watermelons require a lot of water—but they don’t like to be drowned.

Too much water will drown the roots and cause them to rot, which in turn can lead to splitting fruit or even root death.

Lack of nitrogen

Nitrogen is essential for strong growth. Nitrogen deficiency will cause the leaves to curl and turn yellow. This can be caused by a lack of nitrogen in the soil or by over-watering, which leaches nutrients from the plant.

You can add more nitrogen to the soil with a fertilizer spray, or check with your local garden center where you buy your plants to see if they have any specific tips on how best to treat this issue.

Bacterial wilt

Bacterial wilt is a common disease that causes leaves and fruit to curl. It’s caused by bacteria that live in the soil and can be transferred to your watermelon plants by insects or contaminated tools.

The symptoms of bacterial wilt include yellow or brown spots on the underside of leaves, which will eventually turn brown and die. If you notice these signs, it’s important to treat your watermelons immediately so that they don’t spread the disease further into the garden.

Curling leaves on a watermelon plant can be a sign of several potential problems.

Be careful not to over-water your watermelons. Over-watering will cause the roots to rot, which can lead to a wilted appearance of your plants and leaves. This is especially true if you live in an area where temperatures are high and it rains frequently.

You may also have problems with too much fertilizer or too little nitrogen for your plants if the soil is dryer than usual or if you’ve recently transplanted them into new soil.

You can tell if this has happened by looking for yellow spots on the leaves that start at their tips before spreading inward toward their stems (see above).

If this happens, use less fertilizer next time around and make sure there’s enough nitrogen in the soil so that it doesn’t happen again.

If none of these things seem to be causing this problem then I would recommend contacting a professional gardener near your city who will be able to diagnose whether or not there’s something else going on with these plants like bacterial wilt or aphids/spider mites feeding off those leaves.

Aphids and spider mites like to feed on watermelon foliage.

Watermelon leaves curling is usually a sign of aphids, tiny sap-sucking insects. Aphids are usually green, red or yellow in color and cause a lot of damage to plants.

If you find any watermelon leaf curling, it’s important to take care of the problem before it gets out of hand.

You should inspect your plant for signs of infestation every day by carefully looking at all its leaves for any small insects that may be hiding within them.

If you do not see any bugs right away, try shining an LED light on the plant at night time so that any hidden bugs will become visible due to their body heat being revealed through infrared light reflection.

If your watermelon leaves are curling, you should treat it quickly.

Watermelons are a very delicate plant. Left untreated, they will die in a matter of days. The best way to treat it is to use a systemic insecticide. This will kill the insects that are causing the problem and also prevent them from coming back for up to two years.

Watermelon isn’t hard to grow, but if you have a problem with your plants, make sure you know what it is.

If you see your watermelon plants’ leaves bowed, it doesn’t mean that they’re doomed. In fact, this curling is a sign that your plant is thriving and healthy.

Watermelons are vines with long stems and tendrils that grow along the ground to attach themselves to something heavy enough to support their growth.

The leaves at the top of each stem curl up as they grow, giving them more surface area for photosynthesis and therefore allowing them to convert more sunlight into energy for the plant. 

This also helps protect against sunburn in areas where there isn’t direct shade overhead. While it’s normal for some leaves on your plants to curl up like this (especially when growing in warm regions), if all of them are doing it at once then there could be something wrong with either your soil or fertilizer levels—or both.


If your watermelon leaves are curling, there are a few things you can do to help. First of all, make sure that your plants are getting enough water. The soil should be moist but not soggy or flooded – in other words, if it looks like rain is coming soon, don’t plant.

Also make sure that the temperature isn’t too high for them to handle. If none of these seem to be the problem and your plant still has curled leaves (or worse yet, wilting flowers), then it might have been affected by some kind of disease or pest infestation which needs immediate attention.