Hydrangea macrophylla ‘Nikko Blue’ compact plants with fresh green growth, well-known blue mophead hydrangea
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Hydrangea macrophylla 'Nikko Blue'

£17.99
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Hydrangea macrophylla 'Nikko Blue' is one of the best-known mophead hydrangeas, prized for its large, vivid summer flower heads. In acidic soils, the blooms develop a strong blue colour, while in more alkaline conditions they turn pink, allowing gardeners to influence the display. Flowering mainly on old wood, it benefits from light pruning only and a sheltered, partially shaded position. Reliable and easy to grow with adequate moisture, this variety is an excellent choice for borders and containers where bold summer colour is desired.
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Key Features

Plants by type
  • Shrubs
Flower Colour
  • Blue
Eventual Height
  • 1-1.5m
Flowering Month
  • July
  • August
  • September
Planting Position
  • Part shade
Features
  • Deciduous
  • Summer flowering

How to care for Hydrangea macrophylla 'Nikko Blue'

Light:
Part shade; best in morning sun with afternoon shade. Protect from hot midday sun.

Soil:
Moist but well-drained soil; prefers fertile, humus-rich conditions.

Water:
Water regularly, especially during dry spells; soil should not dry out completely.

Pruning:
Minimal pruning required; remove dead or weak stems in spring. Flowers mainly on old wood.

Hardiness:
Hardy in sheltered UK gardens; protect from late frosts and cold winds.

Feeding:
Feed in spring with a hydrangea fertiliser or mulch annually with organic matter.

Notes

Deciduous shrub with a rounded, upright habit.

A classic mophead hydrangea.

Large, rounded flower heads appear in summer.

Flowers are clear blue in acidic soil, turning pink in alkaline soil.

Colour intensity can be influenced by soil pH and aluminium availability.

Lush green foliage provides a strong backdrop to the blooms.

Ideal for borders, containers, and sheltered garden positions.

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