Still rather new to my gardens, grown from seeds sourced from Prairie Moon Nursery.
https://www.prairiemoon.com/elymus-canadensis-canada-wild-rye-prairie-moon-nursery.html
An early succession species, these 5' tall grasses mature quickly and will fade after a few years. A species to consider including in new plantings while slower growing species are maturing.
Please check out the Prairie Moon listing at the link above for more details.
Photos by Crazytwoknobs, Denver Botanic Gardens, Denver Botanic Gardens and Matt Lavin via Wikimedia Commons