Bacterial canker? Gummosis? Borer Damage? Apricot and Aprium

[Oregon_Fruit_Grow]

@Shibumi I found this thread on citation root stocks being susceptible to gall. Is your tree on citation?

Very disappointed in Citation rootstock due to crown gall issue + a lot of talk about Rootstock developments in the EU

Today I removed another bunch of dead trees — plums, pluots, peaches — all on Citation rootstock, all originating from Dave Wilson Nursery (DWN). They live for 3-5 years and die a slow death from crown gall. The roots of these dead trees look just terrible, a mess of crown gall knots that rotted away. I have some long-lived trees on Citation that still do ok, and they came from sources other than DWN, so I would guess that the real issue is that DWN trees come infected with crown gall. However, …