Low to moderate water once established. Water deeply, then let the upper several inches of soil dry; irrigate more frequently during establishment and extreme summer heat.
White gaura (Oenothera lindheimeri, formerly Gaura lindheimeri) is an airy, clump-forming perennial with slender stems and delicate white flowers that flutter like butterflies.
Light: Full sun to light shade; afternoon shade is beneficial in Phoenix, especially near heat-reflecting walls.
Water: Low to moderate water once established. Water deeply, then let the upper several inches of soil dry; irrigate more frequently during establishment and extreme summer heat.
Soil: Well-drained sandy or loamy soil; tolerates alkaline soil. Avoid persistently wet soil and poorly drained clay.
Mature size: Typically 3–4 feet tall and 2–3 feet wide, including flower stems; compact cultivars stay smaller.
Bloom: Spring through fall, often with reduced flowering during Phoenix’s hottest summer weather.
Evergreen / deciduous: Semi-evergreen in Phoenix; may die back after frost or retain a low basal rosette through winter.