Hi Allen: Thanks for your question. I am sorry to see the problem you are having with your viburnums.

I have looked at your photos closely, and the third photo seems the most telling. The leaf at the bottom right looks like Powdery Mildew to me.

https://apps.extension.umn.edu/garden/diagnose/plant/deciduous
/viburnum/spotsorblotchesonleaves.html


I am not certain, however. Please send a photo of an entire plant and we may be able to confirm this diagnosis.   A photo of several plants may be helpful for diagnosis as well, since overcrowding and poor air circulation can be stressful for a plant.

For powdery mildew diagnosis and treatment, please refer to this AgriLife publication: https://aggie-horticulture.tamu.edu/newsletters/hortupdate/hortupdate_archives/2004/may04/PowderyMildewE.html

I wish you could bring in leaves to our office, but the office is currently closed due to COVID-19 stay at home orders and we can't offer that service now.

I hope this helps.

Regards,
Gregory Thomas

Travis County Master Gardeners

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Hi Allen: Thanks for your question. I am sorry to see the problem you are having with your viburnums.

I have looked at your photos closely, and the third photo seems the most telling. The leaf at the bottom right looks like Powdery Mildew to me.

https://apps.extension.umn.edu/garden/diagnose/plant/deciduous
/viburnum/spotsorblotchesonleaves.html

I am not certain, however. Please send a photo of an entire plant and we may be able to confirm this diagnosis. A photo of several plants may be helpful for diagnosis as well, since overcrowding and poor air circulation can be stressful for a plant.

For powdery mildew diagnosis and treatment, please refer to this AgriLife publication: https://aggie-horticulture.tamu.edu/newsletters/hortupdate/hortupdate_archives/2004/may04/PowderyMildewE.html

I wish you could bring in leaves to our office, but the office is
currently closed due to COVID-19 stay at home orders and we can't offer
that service now.

I hope this helps.

Regards,
Gregory Thomas

Greg:  Do I send pics back to you at this address?

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Mr. Thomas:  I just sent 4 emails from my work address, each containing a front and back pic of 4 separate leaves on my viburnum.   I also sent 3 pics of the dead viburnum, and neighboring viburnums.

Because this system requires that I reply using only this email message and not send via a new email, I may have to forward pics using a different computer, which may create a new case #.  

Leaf 1 pic above

Leaf 2 pic above

Leaf 3 pic attached

Does this help identify what could possibly be the issue?

Allen McDaniel, 601 Beardsley Lane, Austin, 78746 ....<personal data hidden>

Leaf 3 front pic attached

Leaf 3 back pic attached

Emails don't work for me....but I was able to post pics directly on the website (...didn't know I could do that). 

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