Perennial: Pest & disease free. Narrow, soft, round stems & vertical, upright divergent growth. Medium-green foliage turns yellowish brown after the 1st frost. Flowers are held at stem tips in early summer. Also good for pots & water settings. Tolerates deer, gopher, bog & clay. Height: 15-24". Exposue: sun/part shade. Water: moist. USDA Z4-11.