UKTC Archive

Anyone seen this effect before - seen on two mature Aesculus hippo (not x
carnea) in Devon.  Occurs on terminal ends of branches on twigs 10-40mm
diameter before being inflated by the condition.  Occurs mostly in upper
crown, but also on low laterals.  There is a small lesion with black/brown
ooze on the distal end of the swelling.  The last 3 years of wood is normal
white as per Aesculus;  internal to that it is a rich chestnut-brown. The
swelling appears to have happened to the twig's growth in early years, and
is being gently accentuated by each annual ring.  Photo shows shoot
sectioned; second email has 2nd photo of whole shoot

 

Any suggestions'd be welcomed.  The trees appear reasonably healthy in other
respects. 

 

Rupert




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