leaves on Gardenia bush have white specks

The leaves on Gardenia bush have white specks on them. The specks do not wipe off. What do I do to protect the plant?

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1 Comment To "leaves on Gardenia bush have white specks"

#1 Comment By shelley On 06/02/2015 @ 12:09 pm

Since the white spots do not rub off we can rule out powdery mildew.

It looks like a type of leaf spot, possibly Cercospora leaf spot. I would recommend spraying it with a fungicide. For more information on leaf spot and the treatment thereof, please visit the following link:
https://www.gardeningknowhow.com/plant-problems/disease/plant-leaf-spots.htm ^[1]

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