Java Glorybower (Clerodendrum speciosissimum)

Java Glorybower

Clerodendrum speciosissimum

Vibrant red pagoda blooms tower over lush foliage, a tropical showstopper. Deciduous flowering shrub; common names: Java Glorybower, Pagoda Flower.

Full sun
2–3/week
Moderate
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Plant Needs

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Sunlight Full to partial sun; tolerate light afternoon shade in hot, arid climates to prevent leaf scorch
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Watering Keep soil consistently moist but not waterlogged; avoid letting the root zone sit in standing water to prevent rot
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Temperature Thrives in warm tropical to subtropical temperatures; protect from frost, maintain minimum 12°C in winter
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Characteristics

  • Leaf: Large, ovate to heart-shaped leaves; glossy dark green, 15–30 cm long, with serrated margins
  • Flower: Dense, tiered terminal clusters of bright red tubular flowers; pagoda-like structure, 10–20 cm tall
  • Stem: Woody, green to brown stems; branching habit with slightly hairy new growth
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Care Guide

Watering

Keep soil evenly moist; increase watering frequency during prolonged hot, dry spells

Fertilization

Feed with diluted balanced fertilizer every 2 weeks. Cease fertilization in late autumn to support dormancy

Composted banana peel tea:Soak fully composted banana peels in water for 24 hours, dilute 1:20, and apply as a root drench to promote bloom development; avoid raw peels to prevent odor and pest issues
Pruning
  • Deadhead spent flower clusters to encourage prolonged blooming through early autumn
  • Prune back overgrown branches in late winter to maintain a compact, bushy shape
  • Remove yellowing or damaged leaves to improve airflow and reduce fungal disease risk
  • Trim leggy stems in early spring to stimulate dense, new growth
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Toxic; ingestion may cause vomiting, diarrhea, excessive salivation, and abdominal discomfort

Humans: Mild gastrointestinal upset or oral irritation if ingested in large quantities

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Garden Uses & Culture

Culture: Symbolizes vibrancy and festive celebration in tropical garden traditions

Usage: Ornamental garden shrub; cut flower arrangements for tropical-themed decor