Mangrove Apple (Rhizophora apiculata)

Mangrove Apple

Rhizophora apiculata

It anchors coastlines with stilt roots, a guardian of tidal shores. Evergreen mangrove tree; common names: Mangrove Apple, Cylindrical Mangrove.

Full sun
N/A/week
Challenging
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Plant Needs

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Sunlight Requires full sun exposure for healthy growth; tolerates minimal partial shade in coastal tidal zones
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Watering Tolerates constant tidal saltwater immersion; no manual watering needed in natural coastal habitats
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Temperature Thrives in warm tropical to subtropical temperatures; cannot tolerate frost or temperatures below 15°C
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Characteristics

  • Leaf: Elliptical, leathery dark green leaves with blunt tips, arranged oppositely on stems
  • Flower: Small, creamy-white fragrant flowers in clusters of 2–5
  • Stilt Roots: Aerial roots emerging from lower trunk to anchor in tidal sediment and facilitate gas exchange
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Care Guide

Watering

Natural tidal cycles provide sufficient moisture; no manual watering required

Fertilization

No fertilization needed in natural habitats; may benefit from trace marine minerals in artificial cultivation. Minimal supplementary feeding required for cultivated specimens

Crushed eggshell powder:Sprinkle small amounts of dried, crushed eggshells around the base of cultivated specimens to supplement calcium; avoid over-application
Pruning
  • Remove dead or damaged branches to maintain structural integrity
  • Trim overcrowded stilt roots to prevent entanglement in artificial cultivation
  • Avoid heavy pruning as mangroves have slow growth rates
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA has no listed toxicity for domestic cats

Humans: No documented toxicity to humans; limited traditional medicinal uses for bark extracts in some regions

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Garden Uses & Culture

Culture: Symbolizes coastal resilience and ecological protection in Southeast Asian coastal communities

Usage: Coastal erosion control; limited traditional medicinal uses for bark extracts; wood used for low-impact construction