My tomato leaves are yellowing more than usual this year – experts share what could be causing it and how to stop it

Yellow leaves on tomato plant, which is growing in a grey pot against a brick garden wall.

Tomatoes are rewarding crops, but thanks to this year’s heatwaves (I’m defending my tomato care skills at all costs), the leaves on my tomato plants are yellowing more than they usually would.

Learning how to grow tomatoes isn’t that difficult once you know how to water, feed and support them properly, but this summer’s heatwaves have taken some of their fate out of our control in recent weeks.