Queen Palm (Arecastrum romanzoffianum)

Queen Palm

Arecastrum romanzoffianum

Its arching fronds bring tropical softness to landscapes. Tall, slender evergreen palm tree; common name: Cocos Palm (regional).

Full sun
1–2/week
Moderate
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Plant Needs

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Sunlight Full sun to partial shade; tolerates coastal sun exposure but benefits from afternoon shade in hot inland climates
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Watering Water deeply and infrequently; allow the top 30 cm of soil to dry completely between waterings to prevent root rot
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Temperature Thrives in warm subtropical conditions; tolerates brief light frosts (down to 10°C) but suffers damage below 5°C
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Characteristics

  • Leaf: Pinnate fronds up to 5 m long, arching, bright green; narrow linear leaflets arranged in two rows
  • Flower: Fragrant creamy-white panicles emerging below frond bases
  • Stem: Smooth gray-brown trunk with persistent leaf bases when young, shedding as tree matures
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Care Guide

Watering

Increase watering frequency to support active frond growth; ensure deep root saturation

Fertilization

Apply slow-release palm fertilizer with micronutrients every 8 weeks. Avoid high-nitrogen fertilizers to prevent frond tip burn

Banana peel compost tea:Compost banana peels for 2–3 months; dilute 1:20 with water for root drenching to avoid nutrient burn
Pruning
  • Remove brown, dead fronds at the trunk base to maintain appearance and reduce pest habitat
  • Trim spent flower panicles after blooming to prevent messy fruit drop
  • Avoid pruning green fronds as they support photosynthetic activity for the tree
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA confirmed non-toxic to cats; no adverse effects from ingestion or contact

Humans: No known toxicity to humans; fruit pulp is non-irritating if ingested in small amounts

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Garden Uses & Culture

Culture: Symbolizes tropical elegance and is widely used in formal landscape design

Usage: Ornamental landscape tree; small orange fruits provide food for local wildlife