Many plants are good for attracting butterflies.
The hummingbird clethra is a butterfly plant you need to try for beauty, fragrance and ease of growing. It provides spicy-fragrant flowers during July and August when color and fragrance are limited. The pleasant fragrance permeates the summer garden and spreads great distances, attracting butterflies and bees. It grows 3 to 4 feet tall and spreads 3 to 5 feet. Shiny, dark green leaves yield to autumn tints of yellow and amber, remaining on the plant until late fall.