Amsonia hubrichtii, PPA of the Year 2011.
This photo, taken Oct 20th, shows the fall color of golden-yellow.
Common name: Arkansas blue star, a southern native.
Whispy, fine texture. Light blue, star-shaped flowers in spring. Mound habit, 3′ height. Full sun to partial shade. Low-maintenance.
Great in containers as a tall, billowing feature, combines well with many plants. Plant in spring and enjoy it all the way until October. Tip: Use a container with brown natural tones and this golden color will pop above it with your yellow or orange mums. Transplant the perennial to your gardens before frost. All good, 3 seasons of interest, and useful throughout.
http://www.perennialplant.org/documents/poy2011.pdf for complete details by the Perennial Plant Association.
New Amsonia on the scene this year: Amsonia ciliata ‘Spring Skies’ (Spring Sky Bluestar); discovered at the Henry Foundation in Philadelphia, PA. Longer-lasting flowers, more compact habit, and some bronze to the golden foliage in fall.