Overview
Hibiscus arnottianus is a bushy shrubs in the genus Hibiscus, part of the Malvaceae family, with deciduous foliage. Hibiscus arnottianus grows best in full sun, and tolerates loam soils and neutral pH. Its UK hardiness is rated H5. Suggested uses include shrub borders, specimen planting and hedging.
About
Hibiscus arnottianus is a species of flowering plant in the mallow family Malvaceae. It is a shrub or small tree native to the islands of Oahu and Molokai in the Hawaiian Islands, where it grows in tropical rainforest. The species is threatened by competition with invasive non-native plants and by predation and habitat degradation by introduced animals. Invasive plants alter its native habitat and compete for space, light, moisture, and nutrients. feral pigs (Sus domesticus), goats (Capra hircus), and axis deer (Axis axis) damage plants and degrade the species' habitat by excessive browsing, trampling, and rooting for food. In the garden it prefers full sun and loam soil. In UK gardens it is hardy in most of the UK (RHS H5). Suggested uses include shrub borders, specimen planting and hedging. It tolerates neutral soils, moist but well-drained conditions and south-facing aspects. Plant out after last frost in fertile, well-drained soil.
Wikipedia contributors, CC BY-SA 4.0 — Hibiscus arnottianus
Growing conditions
Best soil and position for Hibiscus
- Sunlight
- Full sun
- Soil type
- Loam
- Soil pH
- Neutral
- Soil moisture
- Moist but well-drained
- Aspect
- South-facing
- Exposure
- Sheltered
- UK hardiness
- H5
Plant details
Hibiscus arnottianus size, habit and characteristics
- Plant type
- Shrubs
- Habit
- Bushy
- Foliage
- Deciduous
- Suggested uses
- Shrub borders, specimen planting, hedging
Care notes
Pruning and caring for Hibiscus arnottianus
- Propagation
- Semi-hardwood cuttings
- Pest resistance
- Aphids, scale insects, mealybugs, glasshouse whitefly
- Disease resistance
- Honey fungus, powdery mildews
Frequently asked questions
Where is the best place to plant Hibiscus arnottianus?
Hibiscus arnottianus prefers full sun. It suits sheltered positions.
What soil does Hibiscus arnottianus need?
Hibiscus arnottianus grows best in loam soil. It prefers neutral soil. Aim for soil that stays moist but well-drained.
Is Hibiscus arnottianus hardy in the UK?
Hibiscus arnottianus has an RHS hardiness rating of H5, meaning it is hardy in most of the UK, tolerating -15 to -10°C.
How do I propagate Hibiscus arnottianus?
Semi-hardwood cuttings.
More in the Hibiscus genus
- Hibiscus 'Copenhagen'
- Hibiscus 'Mahogany Splendor'

- Hibiscus acetosella 'Haight Ashbury'

- Hibiscus acetosella 'Red Shield'

- Hibiscus calyphyllusRock's hibiscus

- Hibiscus clayi
- Hibiscus coccineusAmerican scarlet rose mallow

- Hibiscus hamabo
