‘Storm Cloud’ is a beautiful introduction from Proven Winners®. In spring, new stems emerge near-black with leaves that are very dark green with silver veins. The stems stay dark throughout spring. Light periwinkle blue, star-shaped flowers completely cover the foliage in late spring, and rebloom for many weeks afterward. Although the main interest of this plant is in spring, like all Amsonias it maintains a great garden presence throughout the summer and fall. Its wide, mounded habit lends itself well to be used in place of shrubs in the landscape. Younger plants will have more of a vase-like habit, but give this plant some space for when it reaches its mature size. This easy care, heat and humidity tolerant, deer resistant perennial is an excellent choice for gardeners looking for low maintenance or native perennials.