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Plants for Bugs

RHS research project monitoring insects in native and non-native garden border plants.

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Poorly viburnum

Posted by Helen Bostock Plantsforbugs on 17 May 2013 at 09:59 AM

While working on site yesterday, a very sick looking Viburnum sargentii caught our attention. It's not cold damage as other viburnums are not affected. Our plant pathologist, Liz, is going to take a look later today but has anyone any ideas? Will post shortly with her findings.




Close up of wilting shoots and blackening foliage



Sick plant (above) and healthy viburnum in a close-by bed (below) 



Ursula said:

My guess would be Sudden Oak Death (SOD). It is caused by a plant pathogen Phytophthora ramorum - viburnum is one of the many host plants that it infects. Here is an informative link

on 05 Aug 2013 at 02:47 AM

Helen Bostock Plantsforbugs said:

That was a good guess Ursula but lab tests showed it to be an unusal bacterial infection. See my later post - Sudden oak death isn't usually quite so patchy on the leaves. If anyone is worried about the disease here are some notes from the RHS advice pages too -

on 03 Dec 2013 at 04:19 PM