Is My Blackberry Infested with Blackberry Cane Borers?
While pruning my thornless blackberry plant, I noticed these galls on its canes.
FYI, my plant is two years old. I live in southern Quebec. 2/3 of the plant was cover with snow almost the entire winter.
This gall is located at the bottom of the cane:
This one is located in the middle on a different cane:
I only have two strong big canes and a skinny one. Can someone explain exactly what they are, and if I should do something about them?