What is ailing my cucumbers and tomatoes?

Asked August 9, 2017, 7:40 PM EDT

Can you help me identify the issue and a cure this? The cucumbers have light brown spots that spread out across the leaves. It is also on the stems. The tomato spots are darker, morning black and don't spread as wide.

Hennepin County Minnesota

1 Response

It looks like your cucumber could have downy mildew. Here is a link that explains it and what you can do. http://www.extension.umn.edu/garden/yard-garden/vegetables/diseases-of-cucurbits/downy-mildew/ . The tomato may have septoria leaf spot. Here is a link that explains that. http://www.extension.umn.edu/garden/yard-garden/vegetables/septoria-leaf-spot-of-tomato/ . Both problems are worse during wet, humid weather. Good air circulation and not watering plants late in the day can help some. Cleaning up all plant material is also helpful.