Plant Identification
Q.

Outside plant (large)

Zone 92101 zone unsure, southwest Ca. | Anonymous added on November 16, 2017 | Answered

I just noticed two leaves that have a large spot growing on them. The spots look more white than brown and it just started developing two days ago. Help Unable to send photo

A.
A.Answers to this queston: Add Answer
Downtoearthdigs
Certified GKH Gardening Expert
Answered on November 17, 2017

A white powdery appearance on leaves is usually caused by powdery mildew fungus:
https://www.gardeningknowhow.com/plant-problems/disease/get-the-cure-for-powdery-mildew.htm

If the spots later turn brown, it is most likely something else. What it is would depend on what plant it's growing on and the particular appearance of the spots.

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