Q What happens when tomato leaves curl or distort?
A The upper leaves on the plant may show extensive curling, sometimes being so tightly curled that they are reduced to foliage balls. The leaf colour remains normal and the overall appearance of the plant is as it should be. The leaves function normally so cropping is not affected.
Caption: Curled tomato leaves may look worrying but the plants should still fruit well
Q What can I do if my tomato leaves are curled or distorted?
A These symptoms seem to be of absolutely no consequence whatsoever and the plants should go on to develop and fruit well.
Q How can I prevent tomato leaves curling or distorting?
A Leaf curling seems to occur when growth is particularly fast. Sometimes it can happen
when the plants have been exposed to low temperatures, so be sure to protect them with
fleece on cold nights.