Buttonbush (Cephalanthus occidentalis) is a flowering plant in the family Rubiaceae that is native to eastern and southern North America. Buttonbush is a multi-stemmed shrub that can grow to be 6 - 12 feet or taller. It is a fast growing plant that can regrow quickly if cut back in the early spring if it becomes unruly.
Buttonbush does best in full sun to partial shade in moist to wet soil.
The flowers are creamy white in colour and are ball shaped.