RE: Do you want to make your own natural liquid fertilizer? One that is especially rich in potassium and perfect to encourage flowers and fruit set?

[thelaundrylady]

The sterile variety such as bocking 14 will not spread by seeds. I like that about the sterile variety, that way I don't have comfrey showing up everywhere that's unwanted. I purchased all my comfrey from Coe's comfrey. I have ordered from other sources before and not happy with them. Coe's comfrey always gives me extra root cuttings for free with each purchase.