Trying To Find Out What’s Wrong With My Tomato And Squash Plants.

Question

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.

• 
• 
• 
• 
• 

Answer 1

That is a fungus known at Phytopthora. This article will help:

https://www.gardeningknowhow.com/plant-problems/disease/what-is-phytophthora.htm