My tomato plant is yellow. How do I know what the problem with it is, and what should I do?
Yellowing of Tomato Plants
Certified GKH Gardening Expert
There are several things that can cause yellow leaves on tomatoes. This article lists the most common and can help you determine what is causing it in your yard: https://www.gardeningknowhow.com/edible/vegetables/tomato/yellow-tomato-leaves.htm