Tomato Plants in Greenhouse Turning Yellow, Then Brown
They are producing flowers and a small crop of tomatoes but look very unhealthy. What can be done to save them?
Certified GKH Gardening Expert
Unfortunately, they sound like they have either a virus or a bacteria. There are several that will cause a slow decline of the plants and all of them are untreatable. It is best to dispose of the plants.
Here is more information: