Rhododendron Plants
Q.

Rhododendron bush disease?

Zone Colchester, Essex | Lizzy added on June 19, 2015 | Answered

I have a potted rhododendron. It was healthy but some leaves have now started to shrivel and on the upper area of the leaf there is what looks like a sprinkling of fine sawdust. The leaves affected are starting to shrivel at the edges, but the rest of the plant looks healthy.

A.
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Heather
Certified GKH Gardening Expert
Answered on June 21, 2015

Looks like you have mealybugs. You can treat the plant with a pesticide to get rid of them. I personally like neem oil as it is organic and beneficial bug safe.

Here is some information that might help:
https://www.gardeningknowhow.com/plant-problems/pests/insects/mealybugs-control.htm
https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm

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