Leaf roll on tomatoes is not caused by disease and does not affect yield or fruit quality. Curled or rolled leaves is a physiological disorder of tomatoes that is often associated with hot dry weather or wind, however it can also occur in response to other stresses like high moisture and nitrogen, fast growth, heavy production, pruning and root damage. Symptoms of leaf roll appear on lower leaves first, when the leaves roll upward and sometimes overlap. Affected leaves are rigid and have a leathery texture. In some cases, leaves can recover if environmental conditions and cultural factors are adjusted to reduce stress. However, if prolonged stresses occur, the leaves are not likely to recover. In severe cases, whole plants can be affected.
