Hierochloa odorata is a species occuring in moist meadows and other damp places; it is known as sweetgrass, or vanilla grass. Traditionally, it is braided & used as incense, as smudges, and to make fragrant baskets. It is a runner, spreading by rhizomes.
Hierochloa odorata green leaves, 18"-2' flowers to 2' tall does best in moist ground zone 4