Posted: 31/08/2017 at 08:45
I have a single flowering (white) comfrey in the garden. I cut it down several times per year and have since I first spotted it. I didn't plant it, I think the birds bought it.
Certainly Bocking 14 is the best if you can get it. If you don't, any other sort will do. Just don't let it flower. I collect comfrey by the sackful from a water meadow by the River Trent. There is a huge swathe of it and I make little impression on the total.
Lawrence Hills published a pamphlet many years ago, he had some of the 35 species of comfrey analysed for nutrients and decided Bocking 14 ( a flowerless russian comfrey ) was the best.
He was one of the founders of the Organic Gardening movement and helped found Ryton gardens. ( Now GardenOrganic. ) He and his wife Cherry had many health problems, and found an organic diet helped in many ways.