Blue Star 'Blue Ice' Plants For Sale Amsonia 'Blue Ice' Herb Growing Tips Light:  Full -Part Sun Temperature:  Herbaceous perennial hardy in Zones 4 to 9 Watering:  Drought tolerant doing a deep watering once a week near the base of the plant is a great way to keep this plant happy! Soil: Well drain soil is best but then again this plant is not picky and will grow is clay soil too. Comments:  If you plan on growing Blue Star in a more shaded area it will need support by stake and will need more pruning to promote the plant to "bush", this will help with flopping issue. Herb Description Amsonia 'Blue Ice' is an impressive plant, requires little care, is deer resistant and can handle drought. Did we mention that it is also a NATIVE?This impressive Amsonia is shorter and more compact than 'Blue Star' with 2' wide mounds of narrow, dark green foliage that erupts with large clusters of rich, dark lavender-blue flowers. The foliage turns a lovely golden yellow for fall interest. We love this plant for its year round interest ~ gorgeous blooms in the spring into summer and slowly turning to warm golden hues for the fall. A perfect landscape plant.