Cucumber White Leaves - Knowledgebase Question

Mundelein, Il
Question by kjsiet
June 19, 2009
I have 6 Cucumber plants that are now about 4 inches tall. The leaves are turning white and it looks like the plants are dying. Can you please help me.

Answer from NGA
June 19, 2009


If entire leaves are turning white it is a response to cold nighttime temperatures. Usually the lower leaves are the ones that turn white and the upper leaves are just fine. However, if the leaves have a white coating on them, it could be powdery mildew, a fungal infections. The affected leaves will eventually turn brown and dry up if this is the case. Aside from pinching off the affected leaves, it is difficult to stop the spread of the disease. I hope it's not powdery mildew!

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