Amsonia tabernaemontana 'Blue Ice' (Blue Star 'Blue Ice') brings refined spring color in a compact, easy-care clump. You will get clusters of dark blue buds that open into starry soft-blue to lavender-blue flowers in late spring to early summer, followed by clean, willow-like foliage that turns buttery gold in fall.
Plant it where you can enjoy its tidy mound and fine texture at the front of a sunny border or along a lightly shaded edge. Give it full sun to part shade; flowering and a sturdier habit are best with more sun, while part shade is welcome in hotter climates. Mature size is about 15-18 inches tall, with a similar spread over time.
Set plants into average, moist but well-drained soil and water regularly the first season to establish roots. After that, it tolerates occasional dry spells and asks for little maintenance. Leave the stems standing for seasonal structure, then cut back in late winter or early spring as new growth begins.
Blue Ice is generally unbothered by deer and rabbits, and it is long-lived once established. Like other amsonias, stems can exude a milky sap that may irritate skin, so wear gloves if you are sensitive when cutting or dividing.