Botanical profile

Hydrangea macrophylla 'Nikko Blue'

Latin name
Hydrangea macrophylla 'Nikko Blue'
Common name
Hydrangea ‘Nikko Blue’
Type
Ornamental shrub
Family
Hydrangeaceae

Hydrangea macrophylla 'Nikko Blue' is an iconic shrubby hydrangea, recognized for its abundant flowering of intense blue when grown in acidic soil. This classic variety features large, very full spherical inflorescences on a vigorous shrub with a rounded, balanced habit. Its growth is harmonious, both in height and width, making it an excellent choice for light shade borders, low flowering hedges, and isolated plantings. The deciduous, large, and lush dark green foliage creates a striking contrast with the spectacular summer blooms. 'Nikko Blue' flowers mainly on the previous year's wood, which makes winter protection of the buds important in cold climates. Highly valued for its strong visual impact and versatile use in the garden, it remains a safe bet among macrophylla hydrangeas.

Care guide

Growing conditions

Light, soil, water and hardiness

Hardiness zone
Zone 5
Exposure
Partial shade
Watering
Regular
Fertilization
Regular, fertilizer for acid-loving hydrangeas
Soil type
Cool, rich, acidic, and well-drained
Minimum temperature
-25°C
Plant appearance

Blooming, foliage and shape

Blooming period
Summer
Flower color
Bright blue to deep blue depending on soil pH
Fruiting
Dry, unadorned capsules
Foliage color
Dark green
Foliage type
Obsolete
Shape
Rounded, dense and vigorous shrub
Garden structure

Size and growth

Height
4–6 ft (1.2–1.8 m)
Width
1.2–1.8 m (4–6 ft)
Growth rate
Moderate
Vegetable garden and yield

Companion planting, spacing and harvest

Harvest period
TRUE
Pet friendly
Safe for pets

Pets

Pollinators
Attracts or supports pollinating insects

Pollinators

Butterflies
Plants that attract butterflies

Butterflies

The availability of our plants varies depending on arrivals, seasons, nursery production and supplier availability. Some varieties may be offered for a limited time only, depending on their natural cycle or current stock. These plant profiles are designed to guide and inspire you when choosing plants for the garden, landscaping projects, containers or long-lasting outdoor arrangements.