This selection of Amsonia bears gorgeous plump navy blue buds in late spring, opening to vivid periwinkle blue, star-shaped flowers.  They are larger than the species and are borne in clusters at the ends of each stem. 

The bright green, compact, slowly spreading foliage forms the perfect background for the delightful blossoms and then turns a rich shade of yellow in fall.  Amsonia adds a billowy, finely textured element to the landscape.  It grows into a dense mass, much like a small shrub.