Threadleaf Bluestar is a fantastic native North American perennial with many seasons of interest. To 4′ tall this strongly clump forming perennial has thread like green leaves that line the sturdy, very vertical stems. Upon rising in late spring they host clusters of star shaped, fragrant (yep) blue flowers. Very pretty. The green fine textured foliage holds space as a blowsy presence in borders, gravel gardens, hellstrips, In autumn the entire plant turns shocking yellow and stays that way for weeks. Fall color at ground level and it rocks. Light but consistent summer water to aid in establishment. Very drought tolerant then. Full sun in any soil type but for permanently boggy. Good deer resistance. They will try it once but not again- for what its worth. Completely deciduous in winter. Emerges mid-spring. Very long lived, no-fuss perennial. Mix with ornamental grasses, Cacti, just about anything.