Why Are My Pepper Plant Leaves Curling | Secrets Raveled Here!


Pepper is a fruiting plant belonging to Capsicum annum. It produces various fruit, such as white, red, and orange, as well as green and purple. Pepper is a perennial plant that can grow at 150 inches. Its leaves are approximately two inches in width and four inches long. The pepper plant’s fruits can be used to make various home spices. The pepper plant can be delicate regarding the ideal conditions for its growth. Suppose the conditions of the epitome aren’t met. In that case, this can lead to the plant showing signs of deterioration, including curling of the leaves. In this article,

Why are my pepper plant’s leaves curling

There are a variety of factors that can cause the leaves of a pepper plant to curl. However, every single one can damage the plant’s productivity capabilities and should be dealt with promptly. The curl of the leaf can be either upward or downwards based on the causes.


If you notice a few leaves curling but not the entire plant, it’s likely an issue with pests. Common pests in any pepper plants (jalapeno pepper bell pepper, jalapeno pepper, and chili pepper) are:

  • Thrips
  • Aphids
  • Whiteflies
  • Spider mites

The pests feed off the sap flowing through your pepper plant’s leaf veins, which causes leaf blades to curl and shrink. If they are allowed to stay long enough, pests could take life from your plants in the garden. If you notice one of the pests listed above on your pepper, be quick to act. I’ve lost plants to pests due to my failure to effectively treat the issue (aphids, in my case). Use your garden hose to rinse as many pests as possible. You don’t have to put your water spray all the way. However, you do need a gentle drip.

Make sure you use enough pressure to get rid of pests; however, it shouldn’t harm your plants. Spray the affected plants with Neem Oil or insecticidal soap. Take out damaged parts of the plants. Utilize good companion plants like onions, basil, and alyssum to repel pests. When you’re dealing with pests, prevention is the most effective option. Make sure you keep an eye on the activities of your plants daily or two, and inspect the leaves and the corners and crevices. If a garden is overcrowded, it could make it difficult to distinguish particular plants, so make sure you give ample space between the pepper plants.


If your pepper plant’s leaves are curling upwards, It’s usually an indication that your plants aren’t getting enough moisture. The curl serves as a defensive method to preserve the most moisture. By drawing the edges of the leaf towards the inside, the leaf’s surface area is reduced, decreasing the loss of moisture to the point of evaporation. Peppers love soil that is evenly moist with a balance of dryness and not too moist. Check the soil’s moisture levels and water it when the top two inches of soil appear dry. The watering frequency depends significantly on the weather conditions in your area and your garden’s soil condition. When we have a Midwestern summer, I must water my pot pepper plants daily in the morning. It is sometimes necessary to give them another watering in the hot summer months at the beginning of the evening.

Cold temperatures

It’s exciting to plant jalapeno, bell, and chili plants during the springtime. Still, occasionally unexpected cold fronts can lower temperatures just a bit low for the plants they like. The light frost damage lasting a few hours could begin as curly leaves; after that, you could see the leaves changing to black. In the event of cold temperatures, pepper plants can die if temperatures reach freezing. Peppers prefer temperatures 60 between 90 and 60 degrees Fahrenheit. Knowing your zones will guide you on the best time to grow your plants outside. Be aware of your USDA zone of hardiness for plants and plants according to the region you live in. Don’t let the initial days of sunshine and warm temperatures deceive you. Wait until you’re way past the final date of frost.

Poor lighting

Pepper plants are sun-lovers. They require six-plus hours of full sunlight each day to grow abundantly. If your plant doesn’t receive enough sun, it could cause leaf curl on the pepper plants as a way to save energy. Trim all plants hindering the sun’s light from your peppers. This includes the branches of trees that hang overhanging. In the case of growing peppers inside containers, There’s a more straightforward option: Move the container to a more sunny spot. For indoor plants, choose the brightest window available and think about adding growing lights to provide an average of 6+ hours of light per day.

Plant diseases

Sometimes, the curly leaf on pepper plants can be caused by bacteria or viruses. Here are some of the most common illnesses of pepper plants:

  • Mosaic virus (aka tobacco mosaic virus) is spread through soil, seeds, and insects, such as Aphids.
  • Verticillium Wilt(aka bacterial will) is found in fields used to grow tobacco, mainly in the southwestern U.S. state.
  • Phytophthora Blight: Found in soil and causes late or early blight.

When the plant is infected by a disease, it cannot recover. The disease can spread to other plants if you do not remove an affected plant from your yard. If you’ve concluded that a plant illness is a reason for the pepper plant’s leaf curl, remove the affected plant immediately. Don’t put sick plants in the compost bin; instead, place them separately in a bag for disposal and then throw them into the garbage. Keep an eye on your other plants, looking for early signs of illness, and take action immediately whenever you see any issues.


This reverse problem could destroy your pepper plants the same way if you don’t water them. A downward leaf curl is a method to determine whether you’re being excessively generous in your watering. If there’s too much moisture, the plant’s cells may explode, resulting in the leaves becoming mushy and soaked with water. Stems. Additionally, excessive liquid in the soil could hinder the roots from taking in nutrients and oxygen. When you have humid soil, two issues could arise (and solutions! ) 1. ensure that there is excellent drainage to prevent water from staying on the ground.

If growing peppers in pots examine the drainage holes at the bottom for obstructions. When growing your peppers in the ground, you should aerate the dirt and break any clay before planting. The second option is to water only when the top 1 to 2 inches of soil feels dry. A note on clay: It’s commonly believed to be a curse. However, it is effective in retaining moisture, so it’s likely to require water less frequently. The breaking up of the clay helps distribute clay evenly throughout the soil, assisting with drainage and water retention.

Hot temperatures

Scorching temperatures (above 90 ° F for many days) could also cause curling leaves in pepper plants. Again, the leaf curl is the plant’s way of protecting itself from extreme heat by reducing its vulnerable areas on the surface. Flowers could decrease when the heat is combined with high humidity, leading to fewer peppers and fruit that have been scalded. If there’s a heatwave in the forecast, sprinkle your pepper plants with water every morning. Also, set a reminder to check them once more at night and water them as needed.

Consider putting shade on the plants to reduce the temperature and the chance of burning. Put stakes in the ground to hold up lightweight cloth, such as plant shade cloth or sheet. Weed barriers can also function as a sunshade for temporary shade when you have extra materials in your garden.

Herbicide exposition

Most herbicides are explicitly designed for broadleaf plant species, including many of the most well-known garden vegetables. Pepper plant species are the top vulnerable vegetables to herbicides. They are listed by the University of Minnesota Extension list the ones. Contain dicamba triclopyr and glyphosate among the most dangerous for vegetable and fruit plants. The curly leaf caused by herbicide exposure generally appears as twists and gnarls within the leaves. This damage can be seen on stems and leaves instead of impacting the entire plant uniformly.

Even if you don’t apply any herbicides on your lawn, or your garden, the drift of herbicides is an issue that is very real. Based on North Dakota State University, certain chemicals can travel as far as 2 miles in the breeze. If you are in an urban/suburban region, your plants could be affected by the fact that your neighbors are treated for their lawns. In rural areas, spraying from farms may cause issues with your garden.


If you notice wrinkled, curled leaves on your pepper plants could be scary. Most of the time, it’s relatively simple to correct if you address the root cause as quickly as possible. Be sure to check for pests and environmental conditions first, then examine the root cause of the disease or damage to herbicides, if required. Do you have any additional concerns about the curly leaves of pepper plants, or have you previously dealt with the curling of leaves? Learning is best when we are an entire community, so submit your experiences and thoughts in the comment section!

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