Jen, those look very healthy to me! May they live long and prosper!
I recently got TONS of comfrey root cuttings in a trade with Trace, and was able to plant nice circles around a bunch of our fruit trees. Thanks Trace
There is a spot in my garden where I had planted my first comfrey a couple of years ago and then pulled it out to move to the orchard. Well that spot continues to put out comfrey shoots as if there's some inexhaustible source in the soil itself

This is in keeping with all that I've heard about the plant and is really a nice feeling to have something in the garden that doesn't fail me. I've had so many stupid, beginner "fails" in my garden. I'm going to check if there's a thread here on the topic where people can just purge/confess their failures... I have lots to contribute! Especially in the department of planting things in terrible spots and pulling out stuff that i planted thinking it was weeds ...
Cheers!
Naomi