Carex vulpinoidea 

Brown Fox Sedge 

• Very Wet, Average or Slightly Dry Soils
• Full Sun to Partial Shade
• Up to 36” tall, 12” to 24” spacing
• Summer blooms 
• Ontario Native, Thrives in Gardens and High Moisture, Meadow and Open Woodland Ecosystems

Grown from seeds sourced from Prairie Moon Nursery.

https://www.prairiemoon.com/carex-vulpinoidea-brown-fox-sedge-prairie-moon-nursery.html 

Tall for a sedge, these reach 2' 3' in height and have a recommended spacing of 1' to 2'. Adaptable to a range of settings from wet to moderatly dry soils and full sun to light shade. Online information indicates that these can spread, especially in moist settings following disturbance.

Please check out the Prairie Moon listing at the link above for more details.

Photo by Filip Verloove, Jay Sturner, Jay Sturner and Jay Sturner via Wikimedia Commons