I have a bunch of comfrey that I've been propagating on my property. It's is some sort of infertile Bocking variety, but I don't know if it's Bocking 4 or Bocking 14. Among many differences, Bocking 4 is commonly used for fodder and has a higher protein content and Bocking 14 is better for biomass but contains more compounds that make animals sick if eaten in large quantities.
My neighbor has horses and the
fence between us is often plagued by blackeberries (yes, a plague here in Oregon) and other weeds and I've been thinking of planting the Bocking 4 variety of comfrey on my side of the
fence. I'd like to have the Bocking 4 so the horses won't be tempted to eat the more poisonous variety. If I knew I had the correct type, then I would simply propagate it, otherwise, I might opt to order some Bocking 4 cuttings.
Does anyone know which Bocking variety I have?
The following are some pictures of my comfrey: