A general answer ( since you did not specify what plant ) is insect damage, drought, or soil is too alkaline.
Sunlight causes this.
New leaf growth is caused by the cold soil causing the leaf to curl and fall off producing a new leaf. The cause of the leaf to curl can be from an aphid species or different plant diseases.
stunted plants leaf curl up as a cup shape hard leaf midrib yellow leaves
Leaf curl on quince trees is often caused by environmental factors, such as extreme temperatures or insufficient water. Additionally, pests like aphids or diseases such as fungal infections, particularly from the fungus Taphrina, can lead to this condition. Proper care, including adequate watering and pest management, can help prevent leaf curl and maintain the health of the tree.
Yes, bad soil can contribute to leaf curl in plants. Poor soil quality, including nutrient deficiencies, poor drainage, or compaction, can stress plants, leading to symptoms like leaf curl. Additionally, imbalances in pH or soil microorganisms can affect plant health, exacerbating the problem. However, other factors such as pests, diseases, and environmental conditions can also cause leaf curl, so it's essential to consider all potential causes.
Leaf curl on bitter gourd plants can be caused by various factors such as viral infections (e.g., cucumber mosaic virus), excessive heat or sunlight, herbicide damage, or certain pests like aphids and whiteflies. Proper monitoring and prompt treatment of the underlying cause can help manage leaf curl in bitter gourd plants.
Feeding, for instance aphids; leaf hoppers and rollers, and psyllids. Fungus, for instance nectarines and peaches. Spraying, for instance 2, 4 D drift; or Banvel or Roundup control reactions. Overwatering, for instance tomatoes. Viral, for instance mosaic virus; or squash or tomato yellow leaf curl virus.
To prevent or treat leaf curl on tomatoes in your garden, you can ensure proper watering, provide adequate sunlight, and avoid over-fertilizing. Additionally, you can use fungicides labeled for tomato leaf curl if the problem persists.
To prevent or treat leaf curl in pepper plants, ensure they have consistent watering, proper drainage, and adequate sunlight. Avoid over-fertilizing and protect plants from extreme temperatures. If leaf curl persists, consider using a fungicide or insecticide as directed.
Lemon leaf curl can be caused by factors such as pests like aphids and spider mites, fungal infections like citrus leaf miner, or environmental stressors like overwatering, under fertilization, or extreme temperatures. Proper pest management, maintaining good air circulation, and providing appropriate care can help prevent lemon leaf curl.
Leaf curl on cannabis can be caused by several factors, including nutrient imbalances, environmental stressors, pests, or diseases. Nutrient deficiencies or excesses, particularly of nitrogen or phosphorus, can lead to curled leaves. Additionally, environmental factors like heat stress, low humidity, or improper watering can contribute to the issue. Pests such as aphids or spider mites can also cause leaf curling by feeding on the plant's sap.
The tomato leaf curl virus is a yellowing and upward curling of leaves on a tomato plant. It is a viral infection that has been transmitted through whiteflies. It will affect fruit production.