Cortaderia Selloana White has large stalks that are topped with soft plumes soaring above them. Amazing as a background or as an accent plant in corners. Grows to an average height of about three feet, with a height of 6-10' tall with plumes. Plumes start mid-summer and last through winter. An elegant addition to your yard. Hardiness zones : 3-10 (-37c/-35f, 1c/35f) Treat them as tender perennial in zones 3-5, and as hardy in zones 6-10. The Pampas grasses are beautiful plants that require minimal care. They grow best in full sun and prefer well-drained soil that is consistently moist. Instead of cutting back the foliage in the fall, wait until the following spring. It will act as its own protective mulch through the winter months. The plant will resist momentary dryness, with the wind and cold (up to -20øC), but the cold mixed with moisture can be fatal for this plant. Be very careful and wear gloves and long sleeves when handling this grass. It has very sharp edges!