I'm growing borage this year, after several years without! I have it near a tree for afternoon shade. Hoping it likes it there. Will be reporting progress also.
I haven't tried growing comfrey again since it's unfortunate encounter with my dh and the weedeater! I thought comfrey might come back from the roots after being wacked like that, but it didn't.
The same event caused the death of the horehound and the chicory. Yes, I know it seems unbelievable but it's true!!