Nikki - Thanks for your answers. In addition to my bright yellow upper leaves, I now noticed that those leaves are curled and gnarled with the bottom of the leaves turning upward. I'm losing my entire crop. I've tried Neem, Malathion and Zaneb. Anything left?
Yellow Upper Leaves on Tomatoes
Certified GKH Gardening Expert
I am so sorry about your plants. As a fellow gardener, I now just how disconcerting this can be. Unfortunately, I am also at a loss. However, you may find a clue in the following article that can help: https://www.gardeningknowhow.com/edible/vegetables/tomato/tomato-leaves-curling.htm