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 4.0Hibiscus 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

Browse all Hibiscus