Symphytum grandiflorum

About

Symphytum grandiflorum, the creeping comfrey, or running comfrey is a species of flowering plant in the family Boraginaceae. It is native to the Caucasus region, and introduced to various locales in Europe as a garden escapee. A deer-tolerant perennial, it is hardy in USDA zones 5 through 8, and is recommended for borders and shady situations. The unimproved species and a number of cultivars are commercially available. Also, it has been crossed with Russian comfrey to produce the multi-cross hybrid Hidcote comfrey, of which a range of ornamental cultivars are available.

Summary from Wikipedia