If you are looking for a native plant that is popular with butterflies and other native pollinators, you should consider mountain mint.
In case you are not familiar with mountain mint, chances are you can spot it growing along a country road. The plants stand upwards of three or more feet tall. Although it is nondescript, it can easily be identified from a distance. The leaves surrounding the flowers will appear as if they were sprinkled with powdered sugar. This makes the blossoms seem to be much larger than they really are.
While recently participating in a butterfly count on the Big Lazer Creek Wildlife Management Area in Talbot County, I found mountain mint blooming in profusion. If fact, I have never seen more mountain mint in one place. Much to the delight of the folks taking part in the count, the mountain mint proved to be a butterfly favorite. Among the butterfly species I personally spotted on mountain mint on that hot, humid August day were gulf fritillary, long-tailed skipper, pearl crescent, eastern tiger swallowtail, and pipevine swallowtail.
Fortunately, this perennial native plant can be easily grown in backyard settings. However, I need to tell you mountain mint can rapidly spread by rhizomes. Consequently, plant mountain mint in an area where it will not crowd out other plants.
In the wild, mountain mint is often found growing along woodland edges, old fields and along roads where the vegetation is not regularly mowed.
Mountain mint does well a variety soil types. However, sites need to receive sunlight for at least half a day. In addition, mountain mint can withstand dry conditions.