Grasses often add a wispy, natural tone to native gardens, and one of the easiest for just about any landscape is Little Bluestem.  It looks great en masse and likewise does a nice job staying put as a single specimen.
 
With Little Bluestem, gardens come to life.  Not only is Little Bluestem a larval host for the Crossline Skipper, which feeds only on grasses and is recommended for conservation status, but about a dozen other lepidoptera depend on this grass as a food source.  You'll also find songbirds scrounging for its seeds.
 
Cut to ground in early spring to promote new growth.
 
Fun fact: Little Bluestem was the Perennial Plant Association's Perennial of the Year for 2022, described as: "an ever-changing kaleidoscope of gray-green, blue, pink, purple, copper, mahogany, red, and orange tones."