If you want Butterflies in your Garden, this plant attracts both Butterflies and Hummingbirds.
We've spruced up the entire side of our driveway with PURPLE colored bushes and it is beautiful.
Not only with the Butterflies but we also added several Spanish Petunia plants (some referred to as Mexican Petunia) but they provide a gorgeous array of purple petunias "every morning, last throughout the day" and fall off at night just to reappear in the morning. They are very hardy and can be trimmed.
So we now have a row of beautiful purple colored flowers, in bloom Spring to Fall and make for an attractive sight along the house.
Both plants are low maintenance. Prune in early spring and require full sun exposure.
You can find these plants at any garden shop or the large home improvement centers and they are reasonably priced.