Description: Viburnum trilobum (cranberrybush viburnum, American cranberrybush, high bush cranberry, or highbush cranberry) is a species of Viburnum native to northern North America, from Newfoundland west to British Columbia, south to Washington state and east to northern Virginia.[1][2] It is very closely related to the European and Asian Viburnum opulus, and is often treated as a variety of it, as Viburnum opulus L. var. americanum Ait., or as a subspecies, Viburnum opulus subsp. trilobum (Marshall) Clausen.