Zone CF336LW | ginahooper51 added on July 2, 2016 | Answered
Why do the leaves on my plants have like a dust on them?
Answered on July 4, 2016
This is likely Powdery Mildew.
It can be caused by damp conditions and lack of air flow around the plants.
You can treat your plants with a fungicide.
Here is a link with more information.
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