Giant White Crinum Lily
Common Name: Giant White Crinum Lily / Giant Crinum Lily / Grand Crinum Lily / Spider Lily / Poison Bulb
Scientific Name: Crinum asiaticum
Light Requirement: Full sun to partial shade. Giant White Crinum Lily flowers best with good light, but it can tolerate some filtered shade in Florida landscapes, especially in hot protected areas.
Height: Typically 3–6 ft. tall and wide in Florida landscapes, depending on age, growing conditions, and maintenance. Flower stalks can rise above the foliage when the plant is in bloom.
Plant Spacing: Space about 4–6 ft. apart for individual specimens, tropical groupings, or large accent plantings. Allow generous room away from walkways, driveways, pool edges, and smaller plants because mature clumps become large, wide, and architectural.
Growth Habit: Moderate-growing, clumping, bulb-forming tropical perennial with broad strap-like green leaves and tall flower stalks carrying large white spider-like flower clusters. Over time, it can form a bold, durable clump that works well as a tropical accent or palm underplanting.
Hardiness: USDA Zones 9b–11; may show cold damage from frost or freezing temperatures but can often recover from the bulb/root system in warm Florida landscapes; moderate drought tolerance once established; moderate aerosol salt tolerance according to UF/IFAS, though it is still best protected from heavy direct salt exposure when possible; adaptable to acidic and alkaline soils as long as drainage is adequate.
Maintenance Info: Low to moderate maintenance once established. Water regularly during establishment, then reduce watering once rooted. Remove older, damaged, or declining leaves and spent flower stalks as needed to keep the clump clean. Pups or offsets can be divided if the plant becomes too large, but leaving some surrounding pups can help keep the base looking fuller. A light application of slow-release landscape fertilizer during the growing season can support healthy foliage and flowering in sandy Florida soils, but heavy fertilizer is usually not necessary once the plant is established. Giant White Crinum Lily contains toxic alkaloids and should not be eaten, so use caution around pets and children.
Best Uses in the Landscape: Excellent as a tropical accent plant, flowering accent, palm underplanting, large foundation-bed feature, entryway planting, pool-area plant, mixed tropical landscape plant, or large low-maintenance clumping perennial. It works especially well where a bold green foliage mass and seasonal white flowers are desired.
Plant Info: Giant White Crinum Lily is native to tropical and subtropical parts of Asia, the Indian Ocean region, and Pacific islands, and it has been widely planted in warm climates around the world. The name “Crinum” comes from the Greek word for lily, referring to its lily-like flowers, while “Spider Lily” describes the long, narrow white petals that give the flowers a spidery look. The common name “Poison Bulb” refers to the toxic compounds found in the bulb and other plant parts. In Florida landscapes, Giant White Crinum Lily is valued for its bold tropical foliage, large clumping form, long life, and ability to create a strong landscape presence with relatively little maintenance once established.
