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How to Grow Alyogyne – Blue Hibiscus

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Alyogyne–commonly called blue hibiscus–is a fast-growing, upright, evergreen shrub grown for its large, trumpet-shaped, lilac-blue to deep purple flowers which grow to 4 inches (10cm) across.

Alyogyne has an open, loose habit; it makes a bright addition of a shrub border. Flowers have a satiny texture. Flowers stand out against the plant’s palmate, bright green leave; the leaves have 5 irregular toothed lobes.

Alyogyne is a tender plant; it can be grown outdoors in Zones 9 to 11. In colder regions, it can be grown as a houseplant.

Alyogyne is a genus of evergreen shrubs once included in the Hibiscus genus. Alyogyne are native to dry scrub in Australia.

Get to know Alyogyne

  • Plant type: Evergreen shrub
  • Growing zones and range: Zones 9-11
  • Hardiness: Tender
  • Height and width: 3 to 6 feet (1-2m) tall and wide
  • Foliage: Palmate, hairy, bright green leaves to 3 inches long with 5 irregularely toothed lobes
  • Flowers: Solitary, funnel-shaped, satiny, lilac, mauve, or purple flowers to 4 inches (10cm) across; flower last 3 to 4 days.
  • Bloom time: Late spring to autumn; blooms on previous year’s growth
  • Uses: Border, containers
  • Common name: Blue hibiscus
  • Botanical name: Alyogyne
  • Family name: Malvaceae
  • Origin: Australia
Blue Hibiscus, Alyogyne huegelii
Blue Hibiscus, Alyogyne huegelii

Where to plant Alyogyne

  • Light outdoors: Plant Alyogyne in full sun.
  • Light indoors: Grow in full light indoors.
  • Soil outdoors: Plant in any well-drained soil.
  • Light indoors: Grow Alyogyne in a pot soilless or soil-based potting mix.

When to plant Alyogyne

  • Set container-grown Alyogyne outdoors in spring or autumn.

Planting and spacing Alyogyne

  • Space Alyogyne 3 to 6 feet (1-2m) apart.

How to water and feed Alyogyne

  • Water Alyogyne moderately during the growing season; water sparingly in winter.
  • Fertilize Alyogyne with a balanced liquid fertilizer ever 3 weeks during the growing season.

Alyogyne care

  • Top dress Aylgyne with aged compost in spring.

Alyogyne pests and diseases

  • Aphids, whiteflies, and spider mite may attack Alyogyne.

Alyogyne propagation

  • Sow seeds in spring in warm soil.
  • Root semi-ripe cutting in late summer.

Alyogyne varieties to grow

  • Alyogyne huegelii. Erect, fast-grwoing shrub, spreading with age; grows 3 to 6 feet (1-2m) tall and wide; palmate, hairy, bright green leaves to 3 inches long with toothed lobes; solitary, funnel-shape, satiny, lilac, mauve or purple flowers 4 inches across; blloms from late spring to autumn,

Written by Stephen Albert

Stephen Albert is a horticulturist, master gardener, and certified nurseryman who has taught at the University of California for more than 25 years. He holds graduate degrees from the University of California and the University of Iowa. His books include Vegetable Garden Grower’s Guide, Vegetable Garden Almanac & Planner, Tomato Grower’s Answer Book, and Kitchen Garden Grower’s Guide. His Vegetable Garden Grower’s Masterclass is available online. Harvesttotable.com has more than 10 million visitors each year.

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