Inkwood (Exothea paniculata)

Inkwood

Exothea paniculata

Its dense evergreen foliage forms a neat, formal hedge. Slow-growing ornamental tree or shrub; common names: Inkwood, Florida Boxwood.

Full sun
1–2/week
Moderate
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Plant Needs

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Sunlight Full sun to partial shade; tolerates coastal wind and salt spray for coastal landscape use
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Watering Water deeply when the top 5 cm of soil is dry; drought-tolerant once established
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Temperature Hardy to 10°C; avoid prolonged frost; thrives in warm subtropical climates
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Characteristics

  • Leaf: Opposite, elliptical, glossy dark green leaves; leathery texture, 5–10 cm long
  • Flower: Small, creamy-white, fragrant panicles clustered at branch tips
  • Stem/Bark: Smooth gray bark on young stems; becomes fissured with age
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Care Guide

Watering

Water every 5–7 days during dry spells to support new growth

Fertilization

Apply balanced slow-release fertilizer once to support spring growth. Do not over-fertilize to avoid excessive leggy foliage

Eggshell powder topdressing:Crush dried eggshells into fine powder; sprinkle 1–2 tbsp around the base every 6 months; water lightly to incorporate into soil
Pruning
  • Prune in late winter to shape hedges or maintain a desired tree form
  • Remove dead, damaged, or crossing branches to improve airflow and reduce disease risk
  • Trim new growth regularly to encourage dense, compact foliage for hedging applications
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: No recorded toxicity to cats

Humans: No known toxicity to humans

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Garden Uses & Culture

Culture: N/A

Usage: Ornamental hedge, coastal landscape plant; wood historically used for ink making