Cave N Rock Switchgrass - (sold per pound) is a warm season, perennial native grass that grows an average of 3-5 feet tall. Highly adaptable to a wide rage of soils and growing conditions. Cave-N-Rock is known for providing thick winter cover for pheasants, screening and bedding areas for whitetail deer. Recommended seeding rate is 5# / acre (45 seeds/ft2). Updated Jan 2022.