Is cumfrey supposed to look this happy?

I live in MN, and the picture was taken today. Should my Cumfrey look this happy where it's at?
It's on a pasture with a creek running next to it with super-black dirt, and the rhubarb near it isn't doing nearly this well.

The posts behind it are bird house posts that are maybe 8 feet tall.

The leaning post is probably only being held up by cumfrey roots.

Does anyone know what bocking this is?

My established comfrey is about 4 feet tall. I don't fertilize mine at all.  Mine is even wider than yours. I think comfrey just likes to get big? My plants are 11 and 8 years old (planted on my kids' first birthdays).

I'm not sure what type of comfrey mine is (mine is blocking and has purple flowers, and I got it from a local permie and didn't ask what type it was). Hopefully someone else knows comfrey better and can tell you what type you have!

I went and reminisced on my old thread, and noticed that, after just one year, my comfrey was already taller than my 2.5 year old!