I got these plants from the Shiawassee County Conservation District (Mid-Michigan) and found them to be prolific in growth. They grow fast and large and attract pollinators. Seeds from the flowers can be used for propagation, but the stems can also be planted in soil to start your own.
Buttonbush (Cephalanthus occidentalis) is a hardy deciduous shrub used for beauty and functionality. Buttonbush is a fast grower characterized by its round, white, spiky flowers and fragrant aroma. Buttonbush grows best in wetlands or near rivers and is often used to prevent erosion. The shrub requires full sun but may tolerate some shade. Otherwise, buttonbush is extremely resilient in all types of temperatures and conditions. It is important to note that the leaves of this plant are toxic to humans.1
Common Name
Buttonbush, common buttonbush, honeybells, pond dogwood, swampwood
Botanical Name
Cephalanthus occidentalis
Family
Rubiaceae
Plant Type
Perennial, shrub
Mature Size
6-12 ft. tall, 6-12 ft. wide
Sun Exposure
Full, partial
Soil Type
Loamy, silt, moist
Soil pH
Neutral
Bloom Time
Summer
Flower Color
White
Hardiness Zones
5-11 (USDA)
Native Area
North America
Toxicity
Toxic to humans1
Buttonbush Care
Here are the main care requirements for growing buttonbush:
Plant in full or partial sun though the shrub will thrive in six to eight hours of sun a day.
Aim to keep the soil moist at all times, especially if the bush is in full sun.
Avoid alkaline soil and plant buttonbush in soil that is neutral to slightly acidic with a soil pH level of 6.8 to 7.2.
Feed the bush in the spring with a slow-release fertilizer.
