I found some comfrey plants at a
local nursery called Symphytum "Longman's Pink". After some mild searching I can't really find any information about what variety it is. The employee I spoke with said its seed is sterile but he didn't think it was a Russian type, rather a "true comfrey hybrid"
I bought three of them, as my first comfrey to begin distributing around our 17 newly planted fruit tree guilds, any info would be appreciated.