Cortaderia selloana 'Ivory Feathers'
Light: Full sun; tolerates light afternoon shade in Phoenix, though flowering may decrease.
Water: Low to moderate once established. Water deeply and let the upper soil dry between waterings; provide supplemental irrigation during prolonged Phoenix summer heat.
Soil: Well-drained soil; tolerates sandy, loamy, and alkaline soils. Avoid persistently wet soil and poorly drained planting basins.
Mature size: Approximately 3–5 feet tall and 4–6 feet wide in foliage; flowering stalks may reach 6–8 feet.
Bloom: Late summer through fall; dried plumes often persist into winter.
Evergreen / deciduous: Generally evergreen in Phoenix; cold or drought can brown the foliage.
Growth rate: Moderate to fast with sufficient water.