why do my bush cucumber plants have white edges on their leaves?

why do my bush cucumber plants have white edges on their leaves?
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1 Answer

Answer :

it might be a leaf mite or it might be powdery mildew.  My cukes always get one or the other and then they die quickly so i always make several plantings 2 weeks apart. If you can spray with an oil before they start to turn you may be able to save the vines. For the first time I have planted white cucumbers.
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