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.
Sunlight causes this.
Stink bugs
Cucumbers curl due to uneven growth caused by factors like temperature fluctuations, inadequate pollination, or genetic traits.
Because whatever you Are using to heat this up however Causes the peperonis to curl up and get small very easy.
The incline preacher curl is the best variation to target the long head of the biceps for maximum muscle growth.
Cucumbers can curl due to inconsistent watering, poor pollination, or high temperatures. This can affect the growth of the cucumber, causing it to develop a curved shape.
It causes the Bourdon tube to straighten.
Leaves curl on tomato plants due to various reasons such as heat stress, nutrient deficiencies, pests, diseases, or herbicide damage. These factors can disrupt the normal growth and function of the plant, causing the leaves to curl as a response to the stress.
most likely aphids, though there may be many reasons
A general answer ( since you did not specify what plant ) is insect damage, drought, or soil is too alkaline.
The homophone for "curl" is "kurl."
You can use un-, for uncurl.