Yellow Leaves on My Tomato Plants at the Bottom

Question

At the bottom leaves on my tomatoes, they have turned yellow. i am growing them in my greenhouse in tubs of compost and some of the leaves near the top on some of them are curling up. What should I do?

Answer 1

It sounds like they may have a blight. These articles will explain more:
https://www.gardeningknowhow.com/edible/vegetables/tomato/early-blight-alternaria-tomato-leaf-spots-yellow-leaves.htm
https://www.gardeningknowhow.com/edible/vegetables/tomato/tomato-blight.htm
https://www.gardeningknowhow.com/edible/vegetables/tomato/yellow-tomato-leaves.htm