Buttonbush
Cephalanthus occidentalis 'Keystone'
Rubiaceae
Growth habit
Shrub
Perennation
Perennial
Native distribution
New Brunsw. to FL, West to Southern MN, NE, OK, and Southern NM, AZ
Location
Source of plant
Western Maine Nurseries
Description
Rounded, 3' to 6' tall, (occasionally 10' to 15' tall in the southern part of its range) of rather loose proportions. Flowers are creamy-white, crowded in globular heads, without the projecting styles, 1" to 1 1/5" across, on peduncles 1" to 1 2/5" long in August. Fruit a nutlet that remains present throughout the winter. A USDA seed strain harvested from parents over a wide geographic range with increased vigor and disease resistance.
USDA Hardiness Zone
5
Special characteristics
disease resistance