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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.

Pimelea prostrata 'Blue Peter' plants with fine and elegant, blue foliage.

Pimelea prostrata 'Blue Peter'

5 from 1 customers

Pimelea prostrata 'Blue Peter', commonly known as Pinatoro or the NZ Daphne plant, is a mat-forming, NZ native, ground cover plant. It has small, blue foliage which becomes adorned with fragrant, white flowers in spring and results in white berries. This evergreen typically grows to 10 cm tall and 50 cm wide. Pimelea prostrata 'Blue Peter' is commonly used as a groundcover, added to coastal plantings, included in rock gardens, planted around outdoor living areas, grown on a bank, or positioned so it can spill out over a path or over a wall.

Suited to regions: All regions
Plant type: Groundcover Plants
Height: 10 cm
Spread: 50 cm
Flowering time: Spring
Tolerances: Coastal, Hardy, Wind
Garden uses: Borders, Ground covering, Living areas, Paths & Steps, Pool areas
Garden styles: Backyard, City & Courtyard, Coastal, Frontyard, Japanese, Mediterranean, Modern, Native, Rock
Podocarpus 'Matapouri Blue' hedge.

Podocarpus Matapouri Blue (Blue Tōtara)

5 from 1 customers

Podocarpus ‘Matapouri Blue’, also known as Blue Totara, is a stunning New Zealand native tree prized for its striking blue-green foliage and tidy growth habit. It makes an exceptional feature or screening plant that brings colour and texture to the garden all year round. Highly adaptable and low-maintenance, this variety performs beautifully in both coastal and inland gardens, adding structure and elegance to any landscape design.

Suited to regions: All regions
Plant type: Trees
Height: 10.00 m
Spread: 5.00 m
Tolerances: Coastal, Extended dry periods, Hardy, Wind
Garden uses: Hedging, Parks, Screening, Specimen
Garden styles: Alpine, Architectural, Backyard, City & Courtyard, Coastal, Formal, Frontyard, Japanese, Mediterranean, Modern, Native
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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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Whether you need assistance finding the plant you’re looking for or you simply want to know more about who we are and what we do, we invite you to get in touch with us today. A member of The Plant Company team will get back in touch as soon as possible.

–The Plant Company

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