Common Buttonbush
Cephalanthus occidentalis
Last reviewed: June 2026
Light
part sun
Water
high
Size
48"–120" H × 48"–120" W
Bloom
Jun, Jul, Aug
Native to
AL, AR, AZ, CA and 29 more states
Pollinators
bees, butterflies, moths
Browse plants for this ecoregion
Common buttonbush is a native shrub that produces distinctive white, spherical flower clusters from June through August. It naturally grows in wetlands and requires consistently moist to wet soil conditions to thrive. This deciduous shrub can reach 4-10 feet in both height and width at maturity.
In an HOA neighborhood
Common Buttonbush takes more care to keep looking intentional in a front yard. Maintenance level: moderate. Consider it for backyard or mid-zone beds rather than the street edge.
Works well in: backyard only.
- Requires wet soil conditions that may create drainage issues
- Large mature size may appear uncontrolled
- Informal growth habit lacks structured appearance
Wildlife value
The unique ball-shaped flowers attract bees, butterflies, and moths throughout the summer blooming period. Birds also benefit from the seeds produced after flowering.
Native range data from the USDA PLANTS Database and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
Does Common Buttonbush fit your yard? Open it in Pollinator Patch to check it against your sun, soil, and HOA-conscious filters.