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Hyacinth Plant

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

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Answered on November 17, 2017

A white powdery appearance on leaves is usually caused by powdery mildew fungus:

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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