Blue Hibiscus (Alyogyne huegelii)

Blue Hibiscus

Alyogyne huegelii

Vibrant blue blooms mirror summer skies, a drought-tough garden gem. Evergreen shrub; common name: Blue Hibiscus.

Full sun
1–2/week
Beginner
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Plant Needs

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Sunlight Full sun to partial shade; tolerates hot, dry summer conditions and light shade
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Watering Water deeply but infrequently; drought tolerant once established; avoid waterlogged soil
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Temperature Thrives at 15–30°C; tolerates light frost down to 5°C with minimal damage
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Characteristics

  • Leaf: Ovate to lanceolate, grey-green, softly hairy, with serrated margins
  • Flower: Large 8–12 cm diameter blooms, vivid blue to purple, five petals with a prominent central stamen column
  • Stem: Woody, branching stems covered in fine silver hairs
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Care Guide

Watering

Water deeply every 7–10 days; allow top 5–10 cm of soil to dry between waterings

Fertilization

Apply a low-phosphorus slow-release fertilizer once at the start of growth. Do not fertilize during winter dormancy

Banana peel compost tea:Use fully composted banana peels; steep in water for 24 hours, dilute 1:20 for root drench; avoid raw peels to prevent pest infestations
Pruning
  • Prune lightly immediately after flowering to maintain compact shape and encourage new bloom growth
  • Remove dead, damaged, or crossing branches in early spring to improve airflow
  • Thin overcrowded stems to increase light penetration to inner foliage
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Non-toxic to cats

Humans: No known toxicity to humans

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Garden Uses & Culture

Culture: N/A

Usage: Ornamental garden shrub, cut flower arrangements, drought-tolerant landscape plant