Firebush 'Grelmsiz' (Hamelia patens 'Grelmsiz')

Firebush 'Grelmsiz'

Hamelia patens 'Grelmsiz'

Vibrant tubular blooms attract pollinators, a tropical burst of color. Evergreen flowering shrub; common name: scarlet bush.

Full sun
1–2/week
Beginner
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Plant Needs

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Sunlight Full sun to partial shade; thrives in bright, indirect indoor light; partial shade prevents leaf scorch in intense summer heat
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Watering Water deeply when the top 2–3 cm of soil dries completely; avoid standing water to prevent root rot
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Temperature Thrives in warm tropical to subtropical temperatures; protect from frost below 10°C to avoid leaf damage
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Characteristics

  • Leaf: Opposite, elliptical to lanceolate leaves; glossy green with reddish undersides
  • Flower: Clustered tubular scarlet-orange blooms; long, slender corollas adapted for hummingbird pollination
  • Stem: Woody, branching stems with reddish tint on new growth
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Care Guide

Watering

Keep soil consistently moist; increase watering frequency during prolonged dry spells

Fertilization

Diluted balanced liquid fertilizer every 2 weeks. Cease fertilization in autumn and winter to support dormancy

Banana peel compost tea:Compost banana peels for 2–3 weeks, steep in water for 24 hours, dilute 1:20 with water for root drenching to promote bloom production
Pruning
  • Deadhead spent flower clusters regularly to encourage continuous blooming through the growing season
  • Prune in late winter to shape the shrub and remove leggy or damaged branches
  • Trim back overgrown stems to maintain compact size for indoor cultivation
  • Remove yellowing leaves to improve airflow and reduce pest risk
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA-verified non-toxic to cats; no reported toxicity

Humans: Non-toxic to humans; no known adverse health effects from ingestion or contact

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Garden Uses & Culture

Culture: Valued in pollinator gardens for attracting hummingbirds, butterflies, and bees; symbolizes vibrant tropical energy

Usage: Ornamental landscape shrub; container plant for indoor or patio display