Rough Comfrey (Symphytum Asperum) is a perennial herb in the Boraginaceae family with moderate care difficulty. It requires moderate watering and full sun or partial shade light in USDA hardiness zones 5-9. This plant is toxic to cats and dogs — keep it out of reach of pets.

Symphytum asperum is a tall, coarse, hairy perennial herb known as prickly comfrey, native to Asia and introduced in Europe and North America.