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mountain flax plant

The mountain flax plant is a striking native of New Zealand, admired for its graceful arching leaves and resilience in a range of garden settings. Naturally elegant, this variety of flax brings soft texture and movement to landscapes, creating a connection to our country's wild, beautiful mountains. Whether mass-planted for dramatic effect or used as an accent, the mountain flax plant stands out for its versatility, low maintenance requirements, and value to both garden design and local ecosystems.

Phormium cookianum

4.5 from 2 customers

Phormium cookianum, commonly known as Mountain Flax or Wharariki, is a graceful New Zealand native valued for its arching green leaves and tall flower spikes. It typically grows 1–1.5 metres tall and wide, making it ideal for borders, mass plantings, or coastal gardens.

From $14.95

Suited to regions: All regions
Plant type: Flaxes
Height: 1.50 m
Spread: 1.50 m
Flowering time: Summer
Tolerances: Coastal, Extended dry periods, Hardy, Wet, Wind
Garden uses: Banks, Living areas, Ponds
Garden styles: Backyard, City & Courtyard, Coastal, Frontyard, Modern, Native, Riparian
Phormium 'Emerald Gem' in a native garden.

Phormium 'Emerald Gem'

4.8 from 4 customers

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 full sun on a well-drained site.

From $8.50

Suited to regions: All regions
Plant type: Flaxes
Height: 60 cm
Spread: 70 cm
Flowering time: Summer
Tolerances: Coastal, Extended dry periods, Hardy, Wet, Wind
Garden uses: Banks, Borders, Living areas, Parks, Paths & Steps, Patios, Ponds, Pool areas, Specimen
Garden styles: Architectural, Backyard, City & Courtyard, Coastal, Frontyard, Japanese, Mediterranean, Modern, Native, Riparian
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$19.95
phormium-pepe-
Phormium 'Pepe' (Dwarf Flax)

Phormium 'Pepe' is a compact New Zealand flax prized for its fine green foliage and neat mounding growth habit. This hardy evergreen provides year...

From$19.95
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...

From$14.95
Phormium tenax plant in a garden with green foliage.
Phormium tenax

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...

From$7.50
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$14.95
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$8.50
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$249.95
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$19.25
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$14.95
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$14.95
Dianella Revelation plants growing in a garden.
Dianella 'Revelation'

Dianella 'Revelation' features flower stems that rise above the foliage through spring and summer to bear masses of delicate, blue flowers, which...

From$16.49
Stromanthe triostar plant.
Stromanthe Triostar (Stromanthe Plant)

Stromanthe Triostar is a popular indoor plant owing to its lush and colourful foliage. It features elegant, dark green, pink, and cream-coloured...

From$33.05
zamioculcas-black-knight-
Zamioculcas Black Knight (Zamioculcas Plant)

Zamioculcas Black Knight is a very popular indoor plant owing to its dark and showy foliage. It grows as a clump and produces upright fronds which...

From$41.33
Pittosporum 'Mountain Green' lush, green foliage.
Pittosporum 'Mountain Green'

Pittosporum 'Mountain Green' is a robust New Zealand native shrub prized for its vibrant green foliage and dense growth. Perfect for creating privacy...

From$22.01
Juncus effusus plants growing in water.
Juncus effusus (Soft Rush Plant)

Juncus effusus (Spiral Rush) is an eye catching rush valued for its distinctive twisting green stems, compact clumping habit, and strong...

From$16.49
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Prunus 'Mountain Haze'

Prunus 'Mountain Haze' is a beautiful flowering cherry that produces an abundance of soft blossoms during spring, creating a spectacular display in...

From$515.35
clianthus-puniceus-
Clianthus puniceus (Parrot Beak Plant)

Clianthus puniceus (Kakabeak) is a spectacular New Zealand native shrub renowned for its striking clusters of brilliant red, beak shaped flowers that...

From$44.09
White flowers on a Cistus 'Snowmound' plant with green foliage.
Cistus 'Snowmound' (White Rock Rose Plant)

Cistus ‘Snowmound’ is a compact evergreen shrub that produces a breathtaking display of pure white flowers with golden-yellow centres from late...

From$24.77
Disphyma australe pink flowers and fleshy, green leaves.
Disphyma australe (NZ Ice Plant)

Disphyma australe, commonly known as NZ Ice Plant, is a hardy and attractive groundcover valued for its fleshy, bright green foliage and striking...

From$19.50
agave-americana-variegata--1
Agave americana 'Variegata' (Variegated Century Plant)

Agave americana 'Variegata' is a striking evergreen succulent valued for its bold architectural form and strongly variegated foliage. It forms a...

From$15.95
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Fuscospora cliffortioides (Mountain Beech)

Commonly known as Mountain Beech, this is a large, evergreen tree native to NZ. The foliage comprises small, dark green leaves which are held densely...

From$270.40
70-windbreak-2
Shadecloth - 70% Shade (Shade Cloth For Plants)

This shade cloth for plants, which is also used as plant windbreaks, reduces light levels and windspeeds by 70%. Therefore, 30% of the wind or light...

From$499.80
Sedum rubrotinctum (Jelly Bean Plant) bright red foliage.
Sedum rubrotinctum (Jelly Bean Plant)

Sedum rubrotinctum, commonly known as Jelly Bean Plant or Pork and Beans Plant, is a compact, low-growing succulent reaching 15–20 cm tall and...

From$21.39
A strong and studry planting spade.
Ace1 Planting Spade

The Ace 1 planting spade is a must for any gardener. This spade is designed so it can penetrate the ground easily without jarring the wrists in the...

From$225.86
Moss pole for plants.
Moss Pole For Plants (Moss Pole For Plants)

These moss poles for plants are made from Coir Fibre (i.e., the husks of coconuts). They are an eco-friendly option to help plants grow healthier and...

From$6.90
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Fertiliser for acid loving plants

Fertiliser for acid loving plants provides targeted nutrition for plants that perform best in acidic soil conditions. It helps support healthy...

From$7.95
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Native Plant Fertiliser (Native Fertiliser)

Selecting the correct native plant fertiliser is essential as they often tend to be slow growing and so require a tailored nutrient plan to meet...

From$16.95
5-litre-plant-pots-
5 Litre Plant Pots

5 Litre Plant Pots are a practical choice for growing larger shrubs, perennials, grasses, herbs, and young trees. They provide generous root space to...

From$79.20
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Indoor Plant Fertiliser Tablets

Indoor plants require feeding from the time you get them home as nurseries typically only put enough fertiliser in the pots to last 4-8 weeks after...

From$34.95
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10 Litre Thermoformed Plant Pots

These lightweight pots are a cost effective means for growing on plants. They feature a strong and broad rim, have been UV stabilised for NZ...

From$5.76

Did you find what you are looking for?

You might be interested in exploring related Latin Names - Dianella, and Phormium, or related Categories - Flaxes.

Search mountain flax plant

What is the Mountain Flax Plant?

The mountain flax plant refers to Phormium cookianum, a native species often found on hillsides, riverbanks, and coastal regions across Aotearoa. With its longer, narrower leaves and more drooping habit than the more robust Phormium tenax, it offers a softer look, perfect for naturalistic gardens. The mountain flax plant thrives in both sun or partial shade and adapts well to a range of soils, making it a popular choice for both home gardeners and landscapers seeking reliable, easy-care structure.

Mountain Flax Plant Features and Benefits

The mountain flax plant is prized for several key qualities: - Graceful, arching leaves often in green or bronze shades depending on the variety - Tolerance of wind, salt spray, and drought, ideal for exposed gardens and coastal planting - Nectar-rich tubular flowers that attract native birds such as tui and bellbirds, supporting biodiversity - Useful as a low-maintenance groundcover or in mass plantings for erosion control on banks and slopes - Adaptability to container gardening and urban environments

If you're looking for a dazzling dwarf selection, Phormium 'Pepe' (Dwarf Flax) is a gorgeous compact option that maintains the signature mountain flax look in smaller spaces.

Mountain Flax Plant in the Garden

Designers love the mountain flax plant for its understated beauty and movement. Group several together at the edge of a pond, or combine with NZ natives such as hebes, astelia, and carex for an authentic, layered effect. This plant is especially valued in eco-sourced planting schemes where both form and function are important. With regular mulching, the mountain flax plant needs little else aside from the occasional tidy up of spent leaves.

For a darker foliage choice, consider the striking Phormium 'Evening Glow', or for a more vivid presence, Phormium 'Emerald Gem' offers a vibrant alternative that pairs beautifully with the softer lines of the mountain flax plant.

Mountain Flax Plant Care and Growing Tips

Growing the mountain flax plant is straightforward: - Plant in well-drained soil in a position that receives sun to part-shade - Water well during establishment—once established, these flaxes are drought tolerant - Prune away old or damaged leaves at the base to keep growth tidy and healthy - Watch for pests such as flax snails, but know that generally mountain flax plants are hardy and resistant

For those wanting to add texture, native beauty, and wildlife appeal to their gardens, the mountain flax plant is a dependable and rewarding choice. Explore our range of Phormium cookianum cultivars and related varieties like Phormium tenax to create your own resilient New Zealand-inspired landscape.

Contact us

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.

Illustration of plant leaves.
Our most famous blooms include Ficus 'Black Knight' and Rose 'Flower Carpet White', but some of our best-kept secrets are Acaena novae-zelandiae (Piripiri), Salvia 'Red', and Gleditsia 'Emerald Cascade' (Weeping Honey Locust) — underrated beauties ready to shine.
–The Plant Company

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