Tomato Plant Leaves Curling

Question

I have a customer growing tomatoes in a greenhouse, and the leaves are curling. Any ideas as to why this happening?

Answer 1

There are several reasons this could be happening. The most likely and harmless is temperature fluctuations. This article can give you some other possibilities: https://www.gardeningknowhow.com/edible/vegetables/tomato/tomato-leaves-curling.htm