winter burn or boxwood blight? - Ask Extension
My Buxus s. has quite a bit of damage. Is it winter burn or boxwood blight?
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winter burn or boxwood blight? #874482
Asked June 24, 2024, 3:47 PM EDT
My Buxus s. has quite a bit of damage. Is it winter burn or boxwood blight?
Clackamas County Oregon
Expert Response
Thank you for your question. I believe that it is neither, but wonder if you could take a photo of the entire hedge, so we can determine if there is a pattern. It would also be helpful to know if any of the green leaves have any spots on them, top or underside. Thanks for more information!
The green leaves are spot free.
These box have been thriving for 20+ years until this winter.
Attached is a jpeg of the hedge.
Thanks,
John Eastman
AA ornamental Hort
MHCC 1975
Thanks, John. I was afraid of that. I believe this is the culprit: https://pnwhandbooks.org/plantdisease/host-disease/boxwood-buxus-spp-phytophthora-root-crown-rot
I assume your training equips you to understand the control mechanisms, as well as recognizing the only fungicide available to homeowners, Monterey Garden Phos. Stargus is an organic, biological control, if you can find it. I hope this helps. Good luck!
I assume your training equips you to understand the control mechanisms, as well as recognizing the only fungicide available to homeowners, Monterey Garden Phos. Stargus is an organic, biological control, if you can find it. I hope this helps. Good luck!
Thank you so much for the info!
Welcome!
