Submitted by POA on Wed, 27/03/2024 - 20:55

Can anyone tell me what caused this? Seen on elder. Seems to be a wasp gall? Thank you!


Submitted by sue on Thu, 28/03/2024 - 14:27


It is a very odd looking growth on the elder, but I am sure its not a gall; there are no known wasp galls found on elder (and very few galls of any kind associated with it).  The tree appears to be dead, so I can only think these are the old eroded remains of twiggy outgrowths on the trunk - the holes being where the soft internal pith has worn away before the hard outer layer.