Cajun Hibiscus (Hibiscus rosa-sinensis 'Cajun')

Cajun Hibiscus

Hibiscus rosa-sinensis 'Cajun'

Vibrant ruffled blooms paint summer with tropical warmth. Evergreen flowering shrub; common name: Cajun Hibiscus.

Full sun
2–3/week
Moderate
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Plant Needs

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Sunlight Requires 6–8 hours of direct sunlight daily for optimal blooming; provide partial shade during intense midday summer sun to prevent leaf scorch
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Watering Water thoroughly when the top 2–3 cm of soil feels dry; avoid overwatering to prevent root rot and fungal growth
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Temperature Thrives in 18–30°C; protect from temperatures below 10°C to avoid leaf drop and frost damage
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Characteristics

  • Leaf: Glossy ovate leaves with serrated margins; dark green, leathery foliage
  • Flower: Large ruffled double blooms in bold red, orange, or pink hues; 10–15 cm in diameter
  • Stem: Woody branching stems with smooth light brown bark
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Care Guide

Watering

Keep soil consistently moist but not waterlogged; increase watering frequency during hot, dry spells

Fertilization

Apply diluted balanced liquid fertilizer every 2 weeks. Discontinue 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, and apply as a root drench to promote vibrant flowering
Pruning
  • Prune in late winter to remove dead, damaged, or overcrowded branches and encourage bushier growth
  • Deadhead spent blooms regularly to extend the flowering period
  • Trim back leggy stems in mid-summer to maintain a compact, rounded habit
  • 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: Toxic; contains glycosides that may cause vomiting, diarrhea, anorexia, and lethargy if ingested

Humans: Ingestion of large quantities may cause mild gastrointestinal upset including nausea or stomach pain

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Garden Uses & Culture

Culture: Symbolizes tropical beauty, hospitality, and vibrant energy in garden design

Usage: Ornamental shrub for garden beds, container patios, and cut flower arrangements