I inherited a plant, grass like leaves that curl, not twist. It is not a juncus. The leaves are flat, approximately 1/2 inches wide. They start out straight, start to arch and then eventually curl. The plant acheives a height of approx 8′. Can’t take care of it without knowing what it is.
Sure you can! Lots of us are seat-of-the-pants- gardeners and have recieved 'I don''t know what it is, but it's pretty" donations. Without a picture, your plant won't be easy to identify, but by your description, it sounds like a grass. All grasses like sun, water and nitrogen.