A variegated form of ‘Karl Forster’ feather reed grass. Erect clumps that appear wheat-like and stand into winter.

Calamagrostis x acutiflora 'Overdam', 2015 by F. D. Richards, available under CC BY-SA 2.0 License at Flickr.com

Feather Reed Grass ‘Overdam’ {calamagrostis acutiflora} by Drew Avery, available under CC BY 2.0 License at Flickr.com