Firewheel Tree (Stenocarpus sinuatus)

Firewheel Tree

Stenocarpus sinuatus

Its whorled flower clusters spin like fiery wheels, a striking evergreen tree; common name: Firewheel Tree.

Full sun
1–2/week
Moderate
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Plant Needs

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Sunlight Full sun to partial shade; prefers dappled light in hot, arid climates to prevent leaf scorch
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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 18–28℃; tolerates light frost (down to 5℃) once fully established
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Characteristics

  • Leaf: Glossy, leathery leaves with wavy or sinuate margins; arranged in dense whorls at branch tips
  • Flower: Bright red-orange, wheel-shaped inflorescences with curved, tubular petals
  • Stem: Straight, sturdy trunk with smooth grey bark in young specimens; fissured bark in mature trees
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Care Guide

Watering

Keep soil consistently moist during active growth

Fertilization

Apply slow-release balanced fertilizer. Avoid over-fertilizing to prevent excessive foliage growth at the expense of flowering

Composted banana peel tea:Steep 2–3 fully composted banana peels in 5L water for 3 days; dilute 1:10 for root drench to avoid nutrient burn
Pruning
  • Remove dead, damaged, or crossing branches in late winter before new growth emerges
  • Thin crowded leaf whorls to improve airflow and light penetration for better flowering
  • Trim potted specimens to maintain compact shape; avoid heavy pruning of mature outdoor trees
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Non-toxic to cats

Humans: No documented toxic effects for humans

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Garden Uses & Culture

Culture: N/A

Usage: Ornamental shade tree for public parks and private gardens; cut flower arrangements for floral displays