Seven-year Apple (Casasia clusiifolia)

Seven-year Apple

Casasia clusiifolia

Thick, glossy leaves hold coastal resilience like a sunlit shield. Evergreen shrub; common name: Seven-year Apple.

Full sun
1–2/week
Moderate
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Plant Needs

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Sunlight Full to partial sun; tolerant of coastal salt spray and direct sunlight
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Watering Water deeply when top 5 cm of soil is dry; drought-tolerant once established
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Temperature Thrives in warm, subtropical temperatures; avoid prolonged exposure below 10°C
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Characteristics

  • Leaf: Thick, leathery, obovate to elliptical leaves with glossy dark green upper surfaces and pale undersides
  • Flower: Small, fragrant white tubular flowers in terminal clusters
  • Fruit: Round, fleshy yellow-orange berries when mature
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Care Guide

Watering

Keep soil consistently moist during active growth

Fertilization

Feed monthly with balanced diluted fertilizer. Cease fertilization in autumn and winter to support dormancy

Banana peel compost tea:Compost banana peels for 2–3 weeks, steep in water, dilute 1:20 for root drench to support fruit and flower development
Pruning
  • Remove dead or damaged branches in early spring to maintain shape
  • Thin dense growth to improve airflow and light penetration
  • Trim back overgrown stems after flowering to encourage bushier growth
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: No documented toxicity to cats per ASPCA records

Humans: No documented toxicity to humans

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Garden Uses & Culture

Culture: N/A

Usage: Ornamental coastal shrub; fruit provides food for local wildlife