Sambucus is a genus of flowering plants in the family Adoxaceae. It is commonly called elder or elderberry.

Plants have large clusters of small white or cream-colored flowers, which bloom in late spring; these are followed by clusters of small black, blue-black, or red berries.

Elderberries are rich in anthocyanidins that give elderberry juice an intense blue-purple color.  Elderberry juice color is listed by the USFDA as allowable in certified organic food products. 

Care should be taken with its berries, as they can be poisonous.

Wikipedia contributors. (2020, January 2). Sambucus. In Wikipedia, The Free Encyclopedia. Retrieved 14:42, January 9, 2020, from