Knowledgebase

Epimedium blight? #750903

Asked May 19, 2021, 2:52 PM EDT

I have over 20 epimedium in our part shade to shade backyard in Silver Spring. They bloomed fine, but now all seem to have a light white film on the leaves. Do you know what it is and how I can vanquish it? Thank you!

Montgomery County Maryland

Expert Response

This does not look like a pest or disease issue, fortunately. Instead, it looks like residue on the leaf surface, either from spray drippings applied nearby (insecticide, fungicide - especially copper-based types, or fertilizer with typical blue dye) or perhaps honeydew from sap-sucking insects on an overhanging shrub or tree. If so, it does not need addressing and will weather-off on its own in time.

The leaf underside photo is out-of-focus, but we do not see anything that looks like concerning damage there. The foliage overall actually looks to be in great condition.

Miri

Answered by the Home and Garden Information Center (HGIC), University of Maryland Extension. For timely gardening information and tips, subscribe to our Maryland Grows blog and quarterly newsletter. Follow us on Facebook, Instagram, and YouTube. Replied May 19, 2021, 3:13 PM EDT
Yay! I’m so relieved, especially since I have so many of these lovely perennials. And thank you for such a quick response as well. 

Your new fan,
Elissa Lichtenstein 

On Wednesday, May 19, 2021, 3:13 PM, Ask Extension <<personal data hidden>> wrote:

The Question Asker Replied May 19, 2021, 3:18 PM EDT

You're welcome!

Answered by the Home and Garden Information Center (HGIC), University of Maryland Extension. For timely gardening information and tips, subscribe to our Maryland Grows blog and quarterly newsletter. Follow us on Facebook, Instagram, and YouTube. Replied May 19, 2021, 4:10 PM EDT

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