Overview

Hydrangea macrophylla 'Black Steel White' is a shrub, climber deciduous shrub in the genus Hydrangea, part of the Hydrangeaceae family, with deciduous foliage. It typically grows around 3.0 m tall. Hydrangea macrophylla 'Black Steel White' grows best in full sun, and tolerates most soils and neutral pH. Its UK hardiness is rated H7. Suggested uses include borders, containers, ground cover, hedging and specimen plant. It is native to Japan.

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.

Wikipedia contributors, CC BY-SA 4.0 — Hydrangea macrophylla

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, West-facing
Exposure
Sheltered
UK hardiness
H7

Plant details

Hydrangea macrophylla 'Black Steel White' size, habit and characteristics

Plant type
deciduous shrub
Habit
Shrub, Climber
Foliage
Deciduous
Height
3.0 m
Suggested uses
Borders, Containers, Ground cover, Hedging, Specimen plant
Native to
Japan

Care notes

Pruning and caring for Hydrangea macrophylla 'Black Steel White'

Propagation
Cuttings, Layering, Seed
Pest resistance
Generally pest-free
Disease resistance
Generally disease-free

Frequently asked questions

Where is the best place to plant Hydrangea macrophylla 'Black Steel White'?

Hydrangea macrophylla 'Black Steel White' prefers full sun. It suits sheltered positions.

What soil does Hydrangea macrophylla 'Black Steel White' need?

Hydrangea macrophylla 'Black Steel White' 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 'Black Steel White' grow?

Hydrangea macrophylla 'Black Steel White' reaches a height of 3.0 m.

Is Hydrangea macrophylla 'Black Steel White' hardy in the UK?

Hydrangea macrophylla 'Black Steel White' 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 'Black Steel White'?

Cuttings, Layering, Seed.

From the Fenn Plants journal

More in the Hydrangea genus

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