Q.Trying To Find Out What’s Wrong With My Tomato And Squash Plants.
In the last 2 days I’ve begun noticing browning on the leaves of both my tomato plants and some of my squash plants. I live in Utah and we had a large fluctuation in temperature a few days ago. I have been careful not to overwater. It has been hot the last few days. Any help would be greatly appreciated.
Certified GKH Gardening Expert
That is a fungus known at Phytopthora. This article will help: