We love Amsonia and you should too!
This one if from Proven Winners and here's what they have to say:
I'm more LOW MAINTENANCE than your OTHER relationships.

Watch in spring as incredibly dark stems emerge from the ground. Olive green leaves have silver veins. Star-shaped, periwinkle blue flowers appear atop of the wide, mounding, shrub-like habit.
Heat Tolerant
Resists:
Deer
Native to North America
Grows to 24-30" tall and 30-36" wide