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dark blue hydrangea

If you’re searching for a vibrant and captivating addition to your garden, a dark blue hydrangea is the perfect choice to deliver stunning colour and year-round interest. With their rich, dramatic blooms, blue hydrangeas add a touch of elegance to garden beds, shaded corners, and even patio pots. Their striking flower heads bring a sense of calm and depth to your outdoor space, and they’re renowned for captivating as both feature plants and backdrop shrubs. Whether you’re new to hydrangeas or a lover of these old-fashioned favourites, growing a dark blue hydrangea in New Zealand is a rewarding experience—with a little know-how, you can enjoy that coveted, intensely blue colour.

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Dichroa Blue Stars (Evergreen Hydrangea)

5 from 4 customers

Dichroa 'Blue Stars' is a striking evergreen shrub admired for its clusters of intense blue star shaped flowers followed by brilliant metallic blue berries. The combination of vivid blooms and glossy fruit creates outstanding seasonal interest from summer into autumn. Ideal for New Zealand gardens, this unique shrub adds bold colour, texture, and year round structure to sheltered borders and woodland style plantings.

Suited to regions: All regions
Plant type: Shrubs
Height: 1.50 m
Spread: 1.50 m
Flowering time: Spring, Summer
Tolerances: Hardy
Garden uses: Living areas, Pool areas
Garden styles: Alpine, Backyard, City & Courtyard, Frontyard, Japanese, Modern, Rock
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Hydrangea 'Blue Wave'

Hydrangea 'Blue Wave' is a stunning lacecap hydrangea known for its vibrant blue flower centres surrounded by delicate outer florets. Flowering through summer, it adds texture and colour to NZ gardens while its lush foliage provides structure. Ideal for borders, containers, and feature planting, it offers reliable performance and a refined, classic look.

Suited to regions: All regions
Plant type: Shrubs
Height: 1.20 m
Spread: 1.20 m
Flowering time: Summer, Autumn
Tolerances: Hardy
Garden uses: Containers, Hedging, Living areas
Garden styles: Alpine, Backyard, City & Courtyard, Formal, Frontyard, Japanese, Modern, Rock
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Liriope muscari 'Blue Skies' plant with blue flowers and green foliage in a garden.
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Hydrangea 'Princess Juliana'

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Hydrangea paniculata 'Levana'

Hydrangea 'Levana' is a spectacular deciduous shrub admired for its enormous cone shaped flower heads and lush green foliage. Flowering abundantly...

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Hydrangea serrata 'Preziosa' cream coloured flower above dark green foliage.
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Hydrangea quercifolia 'Snowflake'

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Hydrangea 'Piamina' is a compact deciduous shrub admired for its vibrant double flower heads and lush green foliage. Flowering abundantly through...

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Hydrangea 'Masja'

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Hydrangea 'Madame Plumecoq' shrub with pink flowers.
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Hydrangea macrophylla 'Leuchtfeuer' pink and cream-coloured flowers.
Hydrangea 'Leuchtfeuer'

Hydrangea 'Leuchtfeuer' is a vibrant mophead hydrangea celebrated for its large rounded blooms in intense deep red to crimson tones. This striking...

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Hydrangea paniculata 'Kyushu' shrub with masses of white flowers.
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A large Phormium 'Dark Delight' plant with elegant, purple foliage.
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Hydrangea petiolaris white flowers and green foliage.
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Hydrangea petiolaris is a climbing hydrangea that grows as a vigorous, self-clinging deciduous climber that produces flat white lacecap blooms in...

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Hydrangea 'Saxon Pink Maiden' pink and cream flower head with dark green foliage.
Hydrangea 'Saxon Pink Maiden'

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Dichroa Blue Stars (Evergreen Hydrangea)

Did you find what you are looking for?

You might be interested in exploring related Latin Names - Cupressus, Dichroa, Helictotrichon, Helleborus, Hydrangea, Juncus, Liriope, Phlebodium, Phormium, Pittosporum, Podocarpus Prostanthera and Salvia, or related Categories - Deciduous Climbers, Conifer Trees, Flaxes, Grasses, Indoor Plants, Perennials, Deciduous Shrubs Evergreen Shrubs and Evergreen Trees.

Search dark blue hydrangea

What Makes a Hydrangea Bloom Dark Blue?

The secret behind a true dark blue hydrangea lies in both variety and soil chemistry. Most commonly, mophead or lacecap hydrangeas can display blue hues, but only when grown in acidic soil with ample aluminium. The more acidic your soil (ideally with a pH of 5 to 5.5), the richer the blue. Amend alkaline soils with garden sulphur or aluminium sulphate to intensify your flowers. For those who want a guaranteed shade, consider varieties bred for their impactful colour, such as Hydrangea Nightingale with its saturated violet-blue blooms, or the much-loved Hydrangea Mariesii Perfecta.

Top Dark Blue Hydrangea Varieties for New Zealand Gardens

Choosing the perfect dark blue hydrangea for your garden depends on flower form, growth habit, and how it fits with your landscape. Some favourites include:

For gardeners seeking something a little different, Dichroa Blue Stars (Evergreen Hydrangea) offers incredible blue berry-like fruit after flowering, along with stunning blue blooms, on an evergreen shrub.

Growing Tips for Intense Blue Colour

To achieve and maintain that sought-after dark blue hydrangea shade, plant in dappled shade with well-drained, moisture-retentive soil. Be sure to mulch with leaf mould or pine needles and water deeply during dry spells. Test your soil pH and adjust as needed with acidifying agents. Feed with a hydrangea-specific fertiliser low in phosphorus to avoid pinking. Prune after flowering to encourage robust new growth and more flower heads next season.

Hydrangea Companion Planting and Design Ideas

Dark blue hydrangeas make a dramatic statement paired with silver-leaved foliage, white-flowering perennials, and woodland natives. Their long-lasting blooms are ideal for cut flower arrangements, drying, and adding structure to informal borders. For extended seasonal interest, combine classic hydrangeas with Dichroa Blue Stars (Evergreen Hydrangea), which holds its evergreen leaves all year.

Bring the Richest Blue to Your Garden

A dark blue hydrangea brings unrivalled richness, charm, and easy-care beauty to Kiwi gardens. Explore your favourite varieties such as Hydrangea Mariesii Perfecta, Hydrangea Nightingale, Hydrangea Garten Baudirektor Kuhnert, and Hydrangea Renate Steiniger to find your perfect match and enjoy a garden awash in true, vivid blue.


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