The blossoms of the Stokes asters are among the most exotic looking perennials as well as a butterfly magnet.
Stokes' asters are an absolute knockout perennial, and butterflies find them to be a real feast. Striking blue flowers and fiery orange butterflies is a combination that is hard to beat in any garden.
The Stokes' aster is cold-hardy to Zones 5 and 6 with a good layer of mulch. This means almost everyone can enjoy them.
The blooms are large, reaching 3 to 4 inches wide and almost as exotic looking as those of the passionflower. They are heaviest in early summer but the plants keep some producing for a long period. ...