Screw Pine (Pandanus utilis)

Screw Pine

Pandanus utilis

Its spiral leaves create sculptural, sun-catching form. Evergreen tropical tree; common name: screw pine.

Full sun
1–2/week
Beginner
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Plant Needs

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Sunlight Bright direct to partial sun; tolerate full sun outdoors, use filtered bright light indoors to prevent leaf tip burn
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Watering Water thoroughly when the top 5 cm of soil is dry; avoid waterlogging to prevent root rot
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Temperature Thrives in 20–30°C; protect from temperatures below 10°C to avoid leaf discoloration and damage
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Characteristics

  • Leaf: Long, linear, sword-shaped leaves arranged in tight spiral whorls; sharp spines along margins
  • Stem: Thick, branching trunk with prop roots for structural support
  • Inflorescence: Fragrant, creamy-white male flowers; female flowers form round, woody fruit heads
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Care Guide

Watering

Keep soil consistently moist but not soggy; mist leaves occasionally to boost humidity

Fertilization

Diluted balanced liquid feed every 2 weeks. Cease fertilization in autumn and winter when growth slows

Banana peel compost tea:Compost banana peels for 2–3 weeks, steep in water for 24 hours, dilute 1:20 for root drench; avoid using raw peels to prevent pest infestations
Pruning
  • Trim brown, damaged leaf tips with sharp, sterile shears to maintain appearance
  • Remove overcrowded lower leaves to improve airflow around the trunk
  • Cut back overgrown branches in early spring to control size and shape
  • Remove dead or decaying prop roots to keep the base tidy and reduce pest habitat
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Non-toxic to cats; no reported adverse effects

Humans: No known toxic effects to humans

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Garden Uses & Culture

Culture: Symbolizes resilience in coastal tropical landscapes; used in traditional weaving crafts

Usage: Ornamental landscape tree; leaves used for weaving mats, baskets, and thatch