The foliage of summersweet clethra is a lustrous, dark green. In the fall, the leaves turn to a pale yellow or golden brown. Plant size is variable and determined by soil and moisture conditions. Summersweet clethra can grow to 3 to 8 feet tall and 4 to 6 feet wide. Pink Spires' produces rose- pink flower buds which open to soft pink.
Silky dogwood produces flat- topped clusters of yellowish white flowers.
Fruit is bluish with white blotches. Silky dogwood is a rounded shrub which grows approximately 6 to 10 feet tall with a similar spread. It grows about 6 to 8 feet tall. The redosier dogwood is noted for its red-colored twigs in winter. Cardinal' is an introduction from the University of Minnesota Landscape Arboretum.