Hydrangea macrophylla 'White Giant' (H) — Shrubby, climbing

Overview

Hydrangea macrophylla 'White Giant' (H) is a shrubby, climbing shrubs in the genus Hydrangea, part of the Hydrangeaceae family, with deciduous foliage. It typically grows around 3.0 m tall. Hydrangea macrophylla 'White Giant' (H) grows best in full sun, and tolerates most soils and neutral pH. Its UK hardiness is rated H7. Suggested uses include borders, containers and climbing walls.

About

Hydrangea macrophylla is a species of flowering plant in the family Hydrangeaceae, native and endemic to Japan. It is a deciduous shrub growing to 3 m (10 ft) tall by 2.5 m (8 ft) or more broad with large heads of pink or blue flowers in summer and autumn.

About the genus

Hydrangea is a genus of more than 70 species of flowering plants native to Asia and the Americas. Hydrangea is also used as the common name for the genus; some are also often called hortensia. The genus was first described from Virginia in North America, but by far the greatest species diversity is in eastern Asia, notably China, Korea, and Japan.

Wikipedia contributors, "Hydrangea", CC BY-SA 4.0 — Hydrangea

Growing conditions

Best soil and position for Hydrangea

Sunlight: Full sun
Soil type: Sandy, Loamy, Clay
Soil pH: Neutral
Soil moisture: Moist but well-drained
Aspect: North-facing, East-facing
Exposure: Sheltered
UK hardiness: H7

Plant details

Hydrangea macrophylla 'White Giant' (H) size, habit and characteristics

Plant type: Shrubs
Habit: Shrubby, climbing
Foliage: Deciduous
Height: 3.0 m
Suggested uses: Borders, containers, climbing walls

Care notes

Pruning and caring for Hydrangea macrophylla 'White Giant' (H)

Propagation: Softwood cuttings, semi-ripe cuttings, hardwood cuttings
Pest resistance: Aphids, capsid bug, hydrangea scale, vine weevil
Disease resistance: Leaf spot, powdery mildew, grey mould, honey fungus

Frequently asked questions

Where is the best place to plant Hydrangea macrophylla 'White Giant' (H)?

Hydrangea macrophylla 'White Giant' (H) prefers full sun. It suits sheltered positions.

What soil does Hydrangea macrophylla 'White Giant' (H) need?

Hydrangea macrophylla 'White Giant' (H) is adaptable and grows happily in most soil types, including sandy, loamy and clay. It prefers neutral soil. Aim for soil that stays moist but well-drained.

How big does Hydrangea macrophylla 'White Giant' (H) grow?

Hydrangea macrophylla 'White Giant' (H) reaches a height of 3.0 m.

Is Hydrangea macrophylla 'White Giant' (H) hardy in the UK?

Hydrangea macrophylla 'White Giant' (H) has an RHS hardiness rating of H7, meaning it is fully hardy throughout the UK, tolerating temperatures below -20°C.

How do I propagate Hydrangea macrophylla 'White Giant' (H)?

Softwood cuttings, semi-ripe cuttings, hardwood cuttings.

More in the Hydrangea genus

Browse all Hydrangea →