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giant flax

Giant flax is an iconic native plant, renowned for its dramatic architectural form, bold foliage, and impressive height. If you're searching for a standout specimen to bring structure and impact to your garden, giant flax delivers. Whether you're looking to transform a landscape, create a wind-tolerant feature, or add NZ heritage to your plant collection, giant flax is a fantastic choice. With its vibrant, sword-like leaves and sturdy nature, it's easy to see why gardeners across New Zealand want to include giant flax in their design plans.

Phormium tenax plant in a garden with green foliage.

Phormium tenax

5 from 2 customers

Phormium tenax, commonly known as the NZ flax or Harakeke, is a flax plant that produces erect, green, sword-like leaves. Stems rise above the foliage in summer to bear twisted-looking flowers that result in black seed pods in autumn, and the nectar produced by the flowers attracts both birds and butterflies. Harakeke grows as a clump to about 2 m tall and the same wide, performing best when planted in full sun on a well-drained site. It is a popular landscape option that is also often used to contrast with other plant colours. Mass planting on a bank not only provides an outstanding display but is also excellent for helping to stabilise the soil.

Suited to regions: All regions
Plant type: Flaxes
Height: 2.00 m
Spread: 2.00 m
Flowering time: Summer
Tolerances: Coastal, Extended dry periods, Hardy, Wet, Wind
Garden uses: Banks, Living areas, Parks, Ponds, Pool areas, Specimen
Garden styles: Architectural, Backyard, City & Courtyard, Coastal, Frontyard, Japanese, Mediterranean, Modern, Native, Riparian
phormium-veneer-

Phormium 'Veneer'

Phormium 'Veneer' is a striking NZ flax known for its upright, sword like leaves with rich bronze and green tones. This hardy evergreen adds bold structure and year round colour to gardens. Well suited to NZ conditions, it thrives in a range of environments and is ideal for feature planting, borders, and modern landscapes.

Suited to regions: All regions
Plant type: Flaxes
Height: 80 cm
Spread: 80 cm
Flowering time: Summer
Tolerances: Coastal, Hardy, Wet, Wind
Garden uses: Borders, Containers, Living areas, Paths & Steps, Pool areas
Garden styles: Architectural, Backyard, City & Courtyard, Coastal, Frontyard, Japanese, Mediterranean, Modern, Native
A large Phormium 'Dark Delight' plant with elegant, purple foliage.

Phormium 'Dark Delight'

Phormium 'Dark Delight', also known as Dark Purple Flax, is a bold New Zealand native flax prized for its broad, upright leaves in deep purple to...

From$20.93
A large Phormium 'Jester' plant with colourful foliage.

Phormium 'Jester'

Phormium 'Jester' is a showy variety of Flax that produces leaves that are striped with a broad, pink central band and a dark purple border. This...

From$20.93
Large Black Rage Phormium in a garden with black foliage.

Phormium 'Black Rage'

Phormium 'Black Rage' is a striking New Zealand native flax known for its bold, upright leaves in deep shades of dark purple to near black. This...

From$20.93

Phormium cookianum

Phormium cookianum, commonly known as Mountain Flax or Wharariki, is a graceful New Zealand native valued for its arching green leaves and tall...

From$17.48
phormium-stripy-mist-

Phormium 'Stripy Mist'

Phormium Stripy Mist is a popular NZ native dwarf flax that features striking green leaves with a chocolate brown centre. It grows as a very tidy...

From$20.93
Phormium 'Surfer Bronze' plants for sale at The Plant Company nursery.

Phormium 'Surfer Bronze'

Phormium 'Surfer Bronze' is a compact and stylish New Zealand native flax with narrow, upright leaves in rich bronze tones. This striking ornamental...

From$18.23
dianella-revoluta-kentlyn--2

Dianella Kentlyn

Dianella Kentlyn is a variety of the commonly known, Flax Lily, produces upright, strap-like leaves which are a rich, dark green with a blue...

From$16.13
Phormium 'Emerald Gem' in a native garden.

Phormium 'Emerald Gem'

Phormium 'Emerald Gem' is a dwarf variety of Mountain Flax or Wharariki. It produces emerald-green leaves and grows to 60 cm tall and 70 cm wide in...

From$18.23
Phormium 'Green Dwarf' flax plant in a native garden with Oioi plants.

Phormium 'Green Dwarf'

Phormium 'Green Dwarf', also known as Dwarf Green Flax, is a compact, tidy New Zealand flax cultivar with lush, bright green, strap-like leaves. It...

From$16.13
Phormium 'Rainbow Red' red and purple striped foliage.

Phormium 'Rainbow Red'

Phormium 'Rainbow Red' is a vibrant New Zealand native flax admired for its bold, arching leaves in shades of bronze, red, and pink. This striking...

From$117.09
Phormium 'Surfer' plants in pots for sale at The Plant Company nursery.

Phormium 'Surfer'

Phormium 'Surfer' is a compact New Zealand native flax admired for its striking green leaves edged with bronze and red tones. Its upright, arching...

From$18.23
dianella-caerulea-goddess-

Dianella Goddess

Dianella Goddess is a variety of the commonly known, NZ Flax Lily, and produces upright, strap-like leaves which are a rich, dark green with a blue...

From$20.18
Phormium 'Jack Spratt' plants for sale at The Plant Company nursery.

Phormium 'Jack Spratt'

Phormium 'Jack Spratt' is one of the smallest New Zealand native flax varieties, admired for its narrow, upright leaves in rich bronze to dark...

From$18.23
dianella-blaze-

Dianella Blaze

Dianella Blaze features broad and gently arching, bronze-purple leaves that are very showy. It typically grows to 70 cm tall and the same wide...

From$16.13
Dianella tasmanica (Tasman Flax Lily) plants with green foliage and blue flowers.

Dianella tasmanica

Dianella tasmanica, commonly known as the Tasman Flax Lily, produces upright, strap-like leaves which are a rich, dark green and have a lush...

From$18.83
Alcantarea imperialis (Giant Bromeliad) plant with a large red flower.

Alcantarea imperialis (Bromeliad)

Alcantarea imperialis, commonly known as the Giant Bromeliad, is a striking architectural plant prized for its massive rosette of broad, silver green...

From$124.13
A Cornus controversa (Giant Dogwood) specimen tree.

Cornus controversa

Cornus controversa, commonly known as the Giant Dogwood, is a medium-sized, deciduous tree that features lush foliage that emerges mid-green in...

From$343.89
Corokia 'Geentys Giant' green leaves.

Corokia 'Geenty's Giant'

Corokia 'Geenty's Giant' is a hardy, NZ native shrub that bears green-yellow foliage held densely on slender, upright branches. Masses of small...

From$22.88
Juncus pallidus (Giant Rush) plants in a landscaped garden.

Juncus pallidus (Giant Rush)

Juncus pallidus, commonly known as the Giant Rush, features erect, dark green leaves and grows as a tidy clump, reaching approximately 75 cm in...

From$16.13
strelitzia-nicolai-

Strelitzia nicolai (White Bird Of Paradise Plant)

Strelitzia nicolai (Giant White Bird Of Paradise) is a bold, architectural plant known for its large banana like leaves and striking white and blue...

From$43.13
Doryanthes palmeri plant in a garden with a large red flower.

Doryanthes palmeri (Giant Spear Lily)

Doryanthes palmeri is a standout plant valued for its commonly known as The Giant Spear Lily, is an Australian native grown for its amazing flowers...

From$146.79
Cyperus ustulatus growing in water.

Cyperus ustulatus (Giant Umbrella Sedge)

Cyperus ustulatus, commonly known as the Giant Umbrella Sedge, is a large and robust NZ native grass. It grows as a clump and produces dark green...

From$17.48
liriope-muscari-evergreen-giant-

Liriope 'Evergreen Giant'

Liriope 'Evergreen Giant' is an herbaceous perennial that grows as a clump and produces strap-like, dark green leaves. Stems rise above the foliage...

From$20.18
Ajuga 'Catlins Giant' plants with green foliage and blue flowers growing in a garden bed.

Ajuga 'Catlins Giant'

Ajuga 'Catlins Giant' (Bugleweed Plant) is a vigorous evergreen groundcover valued for its large glossy dark green leaves and striking blue flower...

From$18.23
sequoiadendron-giganteum-

Sequoiadendron giganteum

Sequoiadendron giganteum (Giant Redwood) is one of the world’s most impressive and majestic conifer trees, valued for its towering growth habit, rich...

From$299.92
Thuja plicata 'Green Giant' trees standing 5 m tall as a lush, green screen.

Thuja 'Green Giant'

Thuja 'Green Giant' is a smaller variety of Cedar and bears sprays of glossy, dark green foliage held on slender stems. The result is a tree with a...

From$28.28
Phormium tenax

Did you find what you are looking for?

You might be interested in exploring related Latin Names - Ajuga, Alcantarea, Cornus, Corokia, Cyperus, Dianella, Doryanthes, Juncus, Liriope, Phormium, Sequoiadendron Strelitzia and Thuja, or related Categories - Bromeliads, Conifer Trees, Flaxes, Grasses, Groundcover Plants, Perennials, Evergreen Shrubs Deciduous Trees and Evergreen Trees.

Search giant flax

What is Giant Flax?

Giant flax refers primarily to Phormium tenax, the largest species of New Zealand flax. It can reach heights of up to 3 metres, with broad, upright leaves forming impressive clumps. The plant is valued for its resilience, thriving in a range of conditions from moist wetlands to exposed coastal areas. Its striking foliage provides year-round interest, and its towering flower stems attract native birds such as tūī and bellbird. For gardeners seeking a robust, low-maintenance plant, giant flax is a natural fit.

Uses for Giant Flax in the Garden

Giant flax is exceptionally versatile. It works well as a specimen plant, in mixed borders, or as a windbreak and erosion control along coastal gardens. Its strong architectural form allows you to anchor planting schemes, bringing texture and movement to spaces. In smaller gardens, giant flax adds height and drama, especially when paired with other New Zealand natives. If you're after a bold focal point that is both beautiful and practical, giant flax ticks all the boxes.

Giant Flax Varieties and Related Flaxes

New Zealand flaxes come in a range of sizes and colours. While Phormium tenax is the classic giant flax, other striking cultivars offer variations in foliage colour and shape. For gardeners wanting something different, consider:

Growing and Caring for Giant Flax

Giant flax is easy to grow. Plant it in full sun to partial shade, in soils ranging from sandy to clay. It's highly tolerant of wind, salt spray, and periods of drought, making it ideal for coastal gardens and exposed sites. Regular removal of dead leaves and spent flower stems keeps your giant flax looking its best. As a low-maintenance, eco-friendly option, giant flax supports local wildlife and fits beautifully with sustainable NZ garden design.

If you're searching for the perfect giant flax or want to explore the wide world of New Zealand flaxes, browse our range for quality plants and expert advice.


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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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