Knowledgebase

Disease or bugs #751231

Asked May 21, 2021, 9:21 AM EDT

I have 4 Azalea bushes (perhaps 20/30years old). The plants have these unusual growth. I need your advice. Thanks!

Howard County Maryland

Expert Response

What you have there is a type of tissue swelling called Exobasidium Gall. They are nothing to worry about and will not hurt your azaleas.

Here is our page about them:

https://extension.umd.edu/resource/exobasidium-gall-azalea

Christine

Answered by theHome 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 21, 2021, 10:24 AM EDT

This work is supported in part by New Technologies for Ag Extension grant no. 2020-41595-30123 from the USDA National Institute of Food and Agriculture. Any opinions, findings, conclusions, or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the view of the U.S. Department of Agriculture.

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