Buttonbush (Cephalanthus occidentalis)
Zones 5-9, NC Native
Deciduous shrub
Ht. 5-12’ Spread 4-8’
Full sun to part shade
Medium to boggy soils, can be grown in standing water
Showy white flowers in early summer
More info: https://plants.ces.ncsu.edu/plants/cephalanthus-occidentalis/