Screw pine (Pandanus tectorius) is a striking tropical evergreen that commands attention with its sculptural form and distinctive architectural presence. Native to coastal regions from northern Australia through Indonesia, Micronesia, Polynesia, and Hawaii, this multi-branched palm-like tree grows 15-20 feet tall (occasionally reaching 30 feet) and spreads 10-25 feet wide, supported by dramatic aerial prop roots that anchor it into sandy soils. Hardy in zones 10-12, it thrives in full sun to partial shade with moderate watering and produces fragrant, showy seasonal flowers followed by showy, edible fruit. In cooler climates, it adapts beautifully to container growing, moving indoors during cold months.
Partial Sun
Moderate
10-12
240in H x 300in W
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Moderate
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The aerial prop roots that radiate from the gray trunk are instantly recognizable and functionally brilliant, anchoring the tree in loose coastal soils while creating a sculptural silhouette that draws the eye. Long, linear, sword-shaped leaves with spiny margins give the plant dramatic texture and movement, while its tolerance for salt spray and coastal wind makes it genuinely rare among tropical ornamentals. Fragrant seasonal flowers evolve into showy, edible fruits, adding both sensory appeal and practical value to a plant that thrives in warm, humid conditions.
Screw pine serves dual roles as both ornamental statement plant and fruit producer. The showy, edible fruits can be eaten fresh or used in traditional island preparations, while the dramatic form, aerial prop roots, and architectural foliage make it a stunning focal point in tropical and subtropical gardens. In cooler climates, it thrives as a container specimen for bright indoor spaces or heated conservatories, where its sculptural qualities provide year-round visual interest. Its exceptional tolerance for salt spray and coastal conditions makes it invaluable for seaside gardens where most tropical plants fail.
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Transplant screw pine outdoors only in USDA zones 10-12, after all frost danger has passed and soil has warmed. In cooler zones, container specimens should be hardened off gradually if moved outdoors for summer, then brought back indoors before fall temperatures drop.
Harvest screw pine's edible fruits when they develop full color and begin to soften slightly, indicating ripeness. The showy fruits signal readiness visually; handle carefully due to the spiny leaf margins.
Screw pine requires minimal pruning due to its naturally erect, multi-branched growth habit. Remove any damaged aerial prop roots or dead foliage to maintain appearance and health. Light pruning can shape the plant if desired, but the dramatic form is part of its appeal, so resist over-pruning.
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“Screw pine's journey across the Pacific tells a story of ocean-faring cultures and adaptation to island life. Native to coastal areas spanning from northern Australia through the tropical islands of Indonesia, Micronesia, and Polynesia to Hawaii, this species became integral to island communities long before it reached global cultivation. Its name comes from the spiral arrangement of its leaves, a botanical spiral that ancient peoples recognized and named. European botanists encountered it through Pacific expeditions, eventually bringing specimens back to temperate regions where gardeners discovered its dramatic architectural qualities and versatility as a container plant.”