White dust on gardenias

I have a number of Gardenias in containers all doing well, only the odd yellow leaf from time to time but no problem. However, I have recently noticed what seems like a grey white dust on the leaves of one of my gardenia plants, possibly tiny mites, having reduced eyesight I cannot see for sure if they are tiny insects. If they are, what do you recommend to kill them? Thank you.

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1 Comment To "White dust on gardenias"

#1 Comment By Nikki On 03/25/2013 @ 8:13 am

This sounds like powdery mildew. Here is more information: https://www.gardeningknowhow.com/plant-problems/disease/get-the-cure-for-powdery-mildew.htm ^[1]

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