Raspberry Plants

Everbearing Raspberries

johnkii added on August 28, 2011 | Answered

Just as they ripen, they get grey patches on them. Is this caused by bugs or a disease?

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Certified GKH Gardening Expert
Answered on August 29, 2011

This sounds like it may be white drupelet syndrome. No one is quite sure why it happens. Some people think it is caused by sunscald while others feel it is pest damage.
This article has a little more info:

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