I'm not an expert, but this is what I know:

It is a dynamic accumulator so is great for compost.

It also can be used in a salve to heal wounds. I got a 3rd degree burn when cleaning out ash from my wood/coal stove and had a burning coal fall inside my glove (estimated temp is 1600 F). About a week after the burn when I still had a huge hole in my hand (see picture below), I put comfrey salve (Dr. Christophers) and it mostly healed up in a little more than a week. Now (3.5 months later) there is only a slight discoloration that lets you know there had been a wound of some kind. It seemed miraculous how fast my hand healed when I started putting the comfrey salve on my hand. FYI, I also put some manuka honey (from day 1), and a mix of manuka honey, collagen, and sovereign silver on it (starting 2 days after starting the comfrey salve.

Some people use it in animal feed, but you can't feed too much because it has a compound (I'm forgetting the name at the moment) that can be toxic in large quantities, so I think most people keep it to less than 5% of feed.

#grownostr #comfrey #wound #healing