Blue Elderberry (Sambucus nigra var. cerulea) is a suckering, deciduous shrub or occasionally a small tree with a loose and open growth habit, bright green leaves, and beautiful white flowers that appear in the summer in fat clusters. These blooms give way to the famous elderberry fruits that are used in syrups, jams, jellies, etc., as well as being highly desirable to birds and wildlife. Elderberries provide Vitamin C and antioxidants, lower inflammation, improve heart health, boost the immune system, and are beneficial for blood sugar management. Berries should not be picked before fully ripe, and must be processed correctly or they will be toxic. The plant is also toxic to horses. Plant as a specimen plant or a small grouping in natural woodland or shade gardens, permaculture or food forest plantings, or use as an informal hedge or privacy screen. To control spread, remove suckers at the base yearly or place in an area where spread is desired. It is tolerant of city pollution. 
Photo Credit: Rison Thumboor