Is this Boxwood blight ? - Ask Extension
i have submitted three pictures from a small boxwood that turned yellow. We got rid of it and hopefully it is not boxwood blight. Your thoughts and su...
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Is this Boxwood blight ? #729552
Asked October 08, 2020, 3:17 PM EDT
i have submitted three pictures from a small boxwood that turned yellow. We got rid of it and hopefully it is not boxwood blight. Your thoughts and suggestions appreciated. Thank you
Henrico County Virginia
Expert Response
I'm not able to make a firm diagnosis based on the pictures submitted.
One of the key diagnostic symptoms is black streaking on the stems. See page 2 of this publication: https://www.pubs.ext.vt.edu/content/dam/pubs_ext_vt_edu/PPWS/PPWS-29/PPWS-29-pdf.pdf . It does appear in the first two pictures that there is some black on the stem, but since these appear to be from the interior older portion of the plant I can't tell if it is Boxwood Blight or just algae that has turned black.
The three diagnostic symptoms are 1) the black streaking on the stems, 2) leaf spots, and 3) defoliation.
