Low water once established. Water deeply, then let soil dry between waterings; provide occasional supplemental irrigation during prolonged summer heat. Reduce watering in winter.
Adam’s needle is a trunkless yucca with stiff, sword-shaped leaves edged in curling white threads. Native to the southeastern United States, it benefits from protection from Phoenix’s harshest summer exposure.
Foliage and roots toxic to pets and livestock if ingested (saponins)
Care Instructions
Light: Full sun to light shade; morning sun with afternoon shade is best in Phoenix. Avoid intense reflected heat from west-facing walls.
Water: Low water once established. Water deeply, then let soil dry between waterings; provide occasional supplemental irrigation during prolonged summer heat. Reduce watering in winter.
Soil: Well-drained sandy, gravelly, or loamy soil. Tolerates alkaline soil but struggles in persistently wet or compacted ground.
Mature size: 2–3 feet tall and 3–4 feet wide per rosette; colonies spread wider. Flower stalks typically reach 5–8 feet.
Bloom: Established plants may bloom in late spring to early summer; flowering is not guaranteed every year. Does not die after flowering like an agave.