Nutgrass is really a sedge, not a grass. It may be known as "nut sedge" where you are.

Okay, I know I'm not the only New Lost City Ramblers fan around here, but it looks like I'm gonna have to be the one who says. "Wow! Lookeethar! Tracy Schwarz posted to this thread! The one and only time that anyone from the best damned folk band of the 60's has ever posted on The Mudcat and it's right here on this composting thread!"