Sumac is a shrub or small tree that is native to many parts of the world, including North America, Europe, and Asia. It is a member of the cashew family and is known for its bright red or yellow foliage in the fall. The leaves are often used in cooking and the berries can be used to make a tart lemonade-like drink. SUMAC is also known for its medicinal properties, such as being used to treat skin conditions and digestive issues.