Comfrey is one of my all time favourite plants. I have both common comfrey and the larger Russian comfrey. I find the best way to grow it for me has been I dig up a clump, cut the roots up into 1-2" lengths and bury the root segments next to things like my tomatoes when i plant them in spring. They get the right amount of water, shade and protection. Just stick them in and forget. Once the end of the season has passed and It's time to pull our the veggies the Comfrey is well established.
