Leaves turning white - Knowledgebase Question

Oakdale, Pe
Question by dlutz200
June 8, 2009
I recently planted my garden. My cucumber leaves are starting to turn white on the tips and some have wilted. Also, I planted hot banana peppers and regular green bell peppers both have almost died the leaves wilted and started to turn brown. I pruned the leaves back in a last ditch effect to save the plant. Help! I do water at night. I was using a


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Answer from NGA
June 8, 2009

0

I can't tell from your description whether the leaves are turning white (losing chlorophyll) or they are getting a white coating on the surface. A white coating indicates a disease called powdery mildew and once it attacks your plants, it's difficult to control. Watering at night shouldn't make a difference to your plants, but shady conditions and poor air circulation can encourage diseases. You might want to take a few of the affected leaves to your local cooperative extension office or well staffed nursery for a diagnosis. Helpful folks there can suggest controls for the problem. Good luck with your veggies!

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