Compton's Retrophyllum (Retrophyllum comptonii)

Compton's Retrophyllum

Retrophyllum comptonii

Its flat, fern-like foliage carries quiet conifer elegance. Slow-growing evergreen conifer; common name: Compton's Retrophyllum.

Full sun
1–2/week
Moderate
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Plant Needs

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Sunlight Full sun to partial shade; tolerates dappled shade in hot subtropical climates
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Watering Water deeply when the top 5 cm of soil is dry; avoid standing water to prevent root rot
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Temperature Thrives in temperate to subtropical temperatures; protect from frost below 5°C
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Characteristics

  • Foliage: Flat, linear to lanceolate leaves arranged in two ranks, glossy dark green above, paler beneath
  • Cones: Male cones are small, cylindrical, yellowish; female cones produce fleshy, berry-like arils
  • Stem: Slender branching stems with smooth light brown bark when young, becoming fissured with age
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Care Guide

Watering

Keep soil consistently moist but not waterlogged

Fertilization

Diluted balanced slow-release fertilizer once monthly. Avoid over-fertilization to prevent foliage burn

Composted pine needle tea:Steep fully composted pine needles in water for 3 days; dilute 1:20 for root drench to maintain acidic soil pH and add mild nutrients
Pruning
  • Remove dead or damaged branches in early spring before new growth emerges
  • Thin overcrowded inner branches to improve airflow and light penetration
  • Shape lightly to maintain desired form; avoid heavy pruning as recovery is slow
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: No documented toxicity to cats

Humans: No documented toxicity to humans

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Garden Uses & Culture

Culture: N/A

Usage: Ornamental conifer for subtropical gardens or large indoor specimen planting