This small tree grows 4-5 m tall, and its branches grow horizontally up to 8 m wide.
Many tiny white flowers build clusters that rely on insect pollination. They bloom in June and July and then again in August and September. Its nectar attracts bees of very different sizes. It supports specialist mining bees that depend on it to reproduce and is a larval host plant to the Spring Azure butterfly. Songbirds devour the dark blue berries on red stems. The leaves turn an attractive purple in fall.
It grows best in medium moisture and well-drained soil but tolerates a wide range of soils.
Thrives in some shade to full sun if roots are shaded. 
It is a great understory tree that brings a lot of life into your garden. 
For more information, check out wildflower.org.