Hi, I am worried that my boxwoods in my front yard have boxwood blight. I have uploaded some pictures. In general, the leaves have started to die from the plant, and have spread to the plant immediately to the right, and on the other side of the porch to the left. Most of the leaves look ok, but I took a picture of some black on some of the leaves. Thanks!
District of Columbia County District of Columbia
Yes, unfortunately, this is boxwood blight. We are able to confirm it by the leaf and stem lesions as well as the defoliation. There is nothing curative for this disease. You will have to remove the symptomatic plants and you have the option to treat nearby boxwoods (if they aren't showing symptoms) using a registered fungicide. Please read this publication for more information.http://pubs.ext.vt.edu/content/dam/pubs_ext_vt_edu/PPWS/PPWS-29/PPWS-29-pdf.pdf
You will have to try to remove as much of the leaf matter as possible because the pathogen can remain on the leaves and infect other boxwoods. We do not recommend replanting boxwoods in this area. Sweetbox and Pachysandra also are susceptible to this disease. https://extension.umd.edu/hgic/topics/boxwood-blight