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Shrub

Blue Hibiscus

Alyogyne huegelii

Blue HibiscusLilac HibiscusNative Hibiscus

An Australian native shrub with large, trumpet-shaped flowers in shades of blue to purple. Despite its name, it's not a true hibiscus but resembles one with its spectacular blooms.

Plant Family

Malvaceae (Mallow family)

Blooming

Spring through summer (March-August), some bloom off and on year-round in mild climates

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Blue Hibiscus with trumpet-shaped blooms
Blue Hibiscus with trumpet-shaped blooms

Symbolism & Meanings

Key Meanings

Australian beauty
Uniqueness
Coastal elegance
Rare splendor
Mediterranean charm

Perfect For

Coastal gardensWater wise landscapesAustralian themed gardensPollinator celebrations

Color Meanings

Blue-purple:Rarity and uniqueness (blue flowers are rare in nature)
Lilac:First love and youthful innocence
Purple:Royalty and admiration

Similar flowers: tricyrtiss and blue vanda orchids also share similar meanings.

Cultural Significance

Named after Baron Charles von Hügel, a 19th-century Austrian botanist and explorer. Formerly classified as Hibiscus huegelii until placed in the uniquely Australian genus Alyogyne in 1968. Represents the distinctive flora of Western Australia and is prized in Mediterranean climates worldwide.
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Botanical Information

Physical Characteristics

Flower Size: 3-4 inches diameter (7-10 cm)
Plant Size: 4-8 feet tall (1.2-2.4 meters), 4-6 feet wide (1.2-1.8 meters)
Flower Shape: Large trumpet or vase-shaped with five overlapping glossy petals

Natural Habitat

Native to: Western Australia (Southwest botanical province)
Habitat: Coastal shrublands, sandy plains, and heath in Western Australia
Climate: Mediterranean, Temperate, Coastal

Growing Guide

Sunlight

Full sun to partial shade (6+ hours of sun); best flowering in full sun

Water

Drought-tolerant once established; moderate water in winter/spring, less in summer to prevent overwatering

Soil

Well-drained, Sandy, Loam, Poor to rich soil, Tolerates various pH

Expert Growing Tips

1

Plant in spring in well-draining location

2

Prune regularly to maintain compact shape and promote blooms

3

Can be trained to single-trunk tree or multi-stemmed shrub

4

Reduce summer watering for best performance

5

Hardy to 25°F (-4°C) for brief periods

6

Protect from strong winds

7

Each flower lasts 2-3 days but blooms appear continuously

Uses & Benefits

Ornamental Uses

  • Specimen shrub or small tree
  • Mediterranean and xeriscape gardens
  • Containers and patio plantings
  • Wall-side borders and screens
  • Pollinator gardens
  • Coastal gardens (tolerates salt spray)

Traditional Uses

  • Not known for medicinal uses; primarily ornamental

Disclaimer: Information provided is for educational purposes only. Consult healthcare professionals before using any plant medicinally.

Frequently Asked Questions about the Blue Hibiscus

Is blue hibiscus a true hibiscus?

No, Blue Hibiscus is not a true hibiscus. It belongs to the genus Alyogyne in the mallow family, but was formerly classified as Hibiscus due to its similar flowers.

How cold hardy is blue hibiscus?

Blue Hibiscus is hardy to zones 9-12 and can tolerate brief temperatures down to 25°F (-4°C). In colder areas, grow it in containers to move indoors for winter.

Why won't my blue hibiscus bloom?

Blue Hibiscus needs full sun, good drainage, and proper summer watering. Too much summer water can cause excessive growth with fewer blooms. Prune regularly to encourage flowering.

How do you prune blue hibiscus?

Prune blue hibiscus in late fall or early spring to maintain shape and size. Regular pruning promotes bushier growth and more abundant blooms on new wood.

Available Colors

Lilac-blue
Purple
Deep purple-blue
Lavender
Mauve

Quick Facts

Type:shrub
Family:Malvaceae (Mallow family)
Native to:Western Australia (Southwest botanical province)
Blooms:Spring through summer (March-August), some bloom off and on year-round in mild climates

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