I don't remember the name. My guess it is TC, not sure. But it has a thick cane and no thorns. Yesterday I've bought another one, Aparaho, it has green buds.

Chester is another variety that would be late to develop.

I grow Apache thornless -- I'm z5, and relative to the rest of my garden it's always late to break bud for me.

Yey!!! they start to open! I thought I killed it when I 'd transplanted it this winter.

Blackberries require a lot of abuse,neglect, or effort to kill. New growth or new sprouts from recent transplants may be weak, but the plant should eventually regain vigor in coming years.