Tomato Black Spot
by Woody
(Westminster, CA)
What causes tomato plants to develop black spots on the leaves and stem of tomato plants?
ANSWER:
Unfortunately, there are quite a few plant diseases that cause black spots to develop on tomato plants.
You might want to take a few of the affected leaves to a local garden center, and ask a garden specialist to help you identify the problem. Or you can ask the local county extension agent to have a look.