Giant Rye Grass (Leymus condensatus) is a member of the grass family that can grow several feet tall. These, out at Sage Ranch, are in the 5-7 ft. range.

Later in the year, after its large green blades turn brown, they have a peculiar, almost ghostly, way of rustling in the wind; sounding as if an animal or person has gently moved through them. (Photograph from a run on May 26, 2006.)