Thalictrum dasycarpum (Tall or Purple Meadow Rue)
Tall Meadow Rue, or Purple Meadow Rue, named for its purplish stems, grows from two to six feet tall. This native Meadow Rue, like the others, has beautiful blue/green foliage, and its stems terminate in clusters of cream/green airy flowers with petal-like sepals. It grows in partial shade in moist, well-drained soil and is ideal for the natural garden or to adorn the background in your more civilized garden. Zones 5-8. Quarts. (Photo by Superior National Forest [CC-BY-2.0 (http://creativecommons.org/licenses/by/2.0)], via Wikimedia Commons).