Though less showy than other salvia species, this s an important food source for bees, butterflies, and hummingbirds. The flowers are small and pale blue-lavender in color. After blooming, black sage seeds provide food for birds, including quail and towhees. A black sage shrub can grow up to 6 feet tall and 10 feet wide. In the garden, this aromatic plant prefers full sun and well-draining soil. It is a low-moisture plant, requiring no supplemental water once established. It is usual for the small, dark green leaves to curl during summer drought.