Gray's lovage (also sometimes called Oshala) is an edible and medicinal species of plant in the carrot family. It sports parsley-like leaves and a carrot-like flower (an umbel), and resides in our higher elevations. This species handles a wide range of growing conditions, from steep, well-drained slopes, to wet alpine meadows, to the forest understory. The size can be quite variable, and is highly dependent on the growing conditions.
 
I love this plant for the beautiful textured leaves and flowers that attract a wide range of pollinators late in the summer. The root is traditionally harvested for its medicinal properties, but the leaves can be eaten as well. 
 
Because of its versatility, this species can be planted with a wide range of companions. Some of my favorites are western columbine, merten's sedge, large-leaf avens, and purple monkeyflower (best for a moist, partial shade scenario).