closeup of the bell d flowers of a common comfrey plant, wild plant from eurasia

background backyard bell bells boneset borage boraginaceae botanic botanical botany closeup comfrey common consound cultivated cultivation eurasia europe european flora flower flowering flowers forget garden herb herbal herbs horticulture knitbone macro medical medicine nature not officinale perennial plant plants purple quaker root seasonal shaped slippery symphytum true weeds wild yard