Overview

Hibiscus syriacus 'Sup'Blue' is a deciduous shrub in the genus Hibiscus, part of the Malvaceae family, with deciduous foliage. It typically grows around 3 m tall and 3 m wide. Hibiscus syriacus 'Sup'Blue' grows best in full sun, and tolerates most soils. Its UK hardiness is rated H7. It is native to East Asia.

About

Hibiscus syriacus is a species of flowering plant in the mallow family, Malvaceae. It is native to areas of east Asia, but widely introduced elsewhere, including much of Europe and North America.

Wikipedia contributors, CC BY-SA 4.0Hibiscus syriacus

About the genus

Hibiscus is a genus of common flowering plants in the mallow family, Malvaceae. The genus is quite large, comprising several hundred species that are native to warm temperate, subtropical and tropical regions throughout the world. Member species are renowned for their large, showy flowers and those species are commonly known simply as "hibiscus", or less widely known as rose mallow.

Wikipedia contributors, "Hibiscus", CC BY-SA 4.0Hibiscus

Growing conditions

Best soil and position for Hibiscus

Sunlight
Full sun
Soil type
Sandy, Loamy, Clay
Soil moisture
Moist but well-drained
Exposure
full sun
UK hardiness
H7

Plant details

Hibiscus syriacus 'Sup'Blue' size, habit and characteristics

Plant type
deciduous shrub
Foliage
Deciduous
Height
3 m
Spread
3 m
Native to
East Asia

Frequently asked questions

Where is the best place to plant Hibiscus syriacus 'Sup'Blue'?

Hibiscus syriacus 'Sup'Blue' prefers full sun. It suits full sun positions.

What soil does Hibiscus syriacus 'Sup'Blue' need?

Hibiscus syriacus 'Sup'Blue' is adaptable and grows happily in most soil types, including sandy, loamy and clay. Aim for soil that stays moist but well-drained.

How big does Hibiscus syriacus 'Sup'Blue' grow?

Hibiscus syriacus 'Sup'Blue' reaches a height of 3 m and a spread of 3 m.

Is Hibiscus syriacus 'Sup'Blue' hardy in the UK?

Hibiscus syriacus 'Sup'Blue' has an RHS hardiness rating of H7, meaning it is fully hardy throughout the UK, tolerating temperatures below -20°C.

More in the Hibiscus genus

Browse all Hibiscus