Variegated Comfrey - anyone grown it?

[muckdiva]

I was leafing through a book on plants for 'difficult' gardens, in the library, and it suggested Variegated Comfrey for dark dry locations. I quite liked the look of the plant in the photo, but wondered if any grapes had grown this variety or had any 'buyer beware' experiences of it?

[Two_Sheds]

Don't know about this one... my comfrey (Russian, Bocking 14) thrives in semi-shade but it does like to be moist not dry