Cephalanthus occidentalis
Buttonbush is a native shrub found growing throughout most of Oklahoma bordering streams
and lakes, except in the panhandle. It is a medium to large shrub with a course, open-rounded
habit from 5 to 12 feet tall and 4 to 8 feet wide. Leaves are dark, glossy green and
lack significant fall color. Clusters of white, fragrant flowers bloom June to July
and look like a pincushion. Flowers are very attractive to hummingbirds, bees, butterflies,
and other pollinators and is considered a good honey plant. Water birds consume the
seed. The round, ball-like fruit structure persists on the plant.
Plants tolerate wet, swampy soils. It is tolerant of heat and soil compaction but
does not like very dry soil; it is a great selection for the rain garden, woodland
garden, pollinator garden, and native garden. Dwarf cultivars include Sugar Shack®
(3-4’ high with red fruit), ‘Bailoptics’ Fiber Optics® (5-6’ high, compact); ‘Sputnik’
is an older variety found in a native stand in Oklahoma.
Exposure: Full sun to part shade
Soil: Moist, wet, wide variety except dry
Hardiness: USDA Zones 5-9