Want a guaranteed butterfly and hummingbird magnet? Or, one of the most fragrant of shrubs? Plant a buddleia (butterfly bush).
This fast-growing, deciduous shrub with long, arching shoots will reach heights of 6 to 8 feet. Although the green leaves add a welcome bit of color to any landscape, it is the masses of blossoms—long, seductively spiked trusses—that are special. From summer to autumn, the butterfly bush bears dense panicles, 12 inches or more long, that fill the air with a fruity scent.
At its northern limits, the shrubs can die back, sometimes all the way to the ground. No matter. Butterfly bush is vigorous and undemanding and will send up new shoots, given a sunny location and average garden soil.
Note: Butterfly bush can be an invasive species in some areas; check with your local cooperative extension before planting.