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White stuff on crepe myrtle

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posted 6 months ago

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I'm sure it's some sort of fungus but it seems to be growing on a few of our potted crepe myrtles. Can anybody tell me what it is and suggest a fix for this?

Thanks much!

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Anne Miller

master steward

Posts: 19755

Location: USDA Zone 8a

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posted 6 months ago

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Can you post a picture of the white stuff?

My guess without seeing it is that it is powdery mildew and a fungicide will take care of that.

Here are several nontoxic fungicide recipes:

https://permies.com/t/93537/nontoxic-Fungicide

Invasive plants are Earth's way of insisting we notice her medicines. Stephen Herrod Buhner
Everyone learns what works by learning what doesn't work. Stephen Herrod Buhner

Christopher Weeks

master gardener

Posts: 6999

Location: Carlton County, Minnesota, USA: 3b; Dfb; sandy loam; in the woods

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posted 6 months ago

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I want to emphasize that I live somewhere very different than you do by noting that I have 18" of snow outside right now, so there's plenty of room for me to not know your plants and pests. But it looks like powdery mildew to me too.

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