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flax growing zone

If you’re searching for information about the best flax growing zone, you’re likely already inspired by the bold foliage and architectural lines that New Zealand flax brings to gardens. Flax, particularly species and cultivars from the Phormium genus, is a standout in many New Zealand landscapes thanks to its versatility and hardiness. Understanding the ideal climate and region for growing flax ensures these low-maintenance beauties will thrive in your garden for years to come.

Phormium cookianum

5 from 1 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. In summer, it produces yellow to orange tubular flowers that attract birds and pollinators. Hardy and tolerant of wind, salt, and poor soils, Wharariki thrives in full sun to part shade.

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 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
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$17.95
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 '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$9.95
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$17.95
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$16.49
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$12.95
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$12.95
phormium-stripy-mist-
Phormium 'Stripy Mist'

Phormium 'Stripy Mist' is an attractive New Zealand flax valued for its beautifully variegated foliage featuring soft green leaves striped with...

From$17.95
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$17.95
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$20.63
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$12.95
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...

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$12.95
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
Dianella revoluta 'Little Rev' plants in a garden.
Dianella 'Little Rev'

Dianella 'Little Rev' (Blue Flax Lily) is a compact and hardy ornamental grass like plant valued for its attractive blue green foliage and tidy...

From$15.87
potting-media-
Nursery Grade Growing Media

The Plant Company growing media is top of the line and used by the best commercial nurseries. This blend has been developed over many years to...

From$29.75
pb-3-planter-bags-1
PB3 Planter Bags (Grow Bags Online)

These PB3 planter bags are 80 microns thick and hold 1.8 litres of potting mix. They are durable and won’t rip which makes them great for handling...

From$29.08
pb-65-planter-bags-
PB6.5 Planter Bags (Grow Bags On Line)

These PB6.5 planter bags are 100 microns thick and hold 3.6 litres of potting mix. They are durable and won’t rip which makes them great for...

From$44.86
pb-8-planter-bags-1
PB8 Planter Bags (Potting Bags For Plants)

These PB8 planter bags are 125 microns thick and hold 4.5 litres of potting mix. They are durable and won’t rip which makes them great for handling...

From$51.69
pb-28-planter-bags-
PB28 Planter Bags (Growing Bag)

These PB28 planter bags are 125 microns thick and each bag holds 12 litres of potting mix. They are durable and won’t rip which makes them great for...

From$130.50
pb-18-planter-bags-
PB18 Planter Bags (Grow Plant Bags)

These PB18 planter bags are 125 microns thick and each bag holds 10 litres of potting mix. They are durable and won’t rip which makes them great for...

From$77.47
pb-12-planter-bags-
PB12 Planter Bags (Grow Bags For Plants)

These PB12 planter bags are 125 microns thick and hold 6.75 litres of potting mix. They are durable and won’t rip which makes them great for...

From$57.76
35-litre-planter-bags-4
35L Planter Bags (Growing Bags)

These 35L planter bags have two handles and hold 35 litres of growing media. They are durable and won’t rip which makes them great for handling and...

From$8.93
pb-40-planter-bags-
PB40 Planter Bags (Growbag)

These PB40 planter bags are 125 microns thick and each bag holds 18 litres of potting mix. They are durable and won’t rip which makes them great for...

From$121.64
Large Astelia chathamica in a garden with silver flax-like leaves.
Astelia chathamica (Chatham Island Astelia)

Astelia chathamica, commonly known as the Chatham Island Astelia or Kakaha, produces broad, erect, silver-green leaves. The leaves are held with a...

From$159.95
Dianella 'Margaret Pringle' plant in a pot.
Dianella 'Margaret Pringle'

Dianella 'Margaret Pringle' bears spikes carrying delicate, blue flowers in spring, which are followed by small, blue berries in summer. These are...

From$20.63
pb-60-planter-bags-
PB60 Planter Bags (Garden Grow Bags)

These PB60 planter bags are 150 microns thick and each bag holds 36 litres of potting mix. They are durable and won’t rip which makes them great for...

From$169.50
pb-95-planter-bags-
PB95 Planter Bags (Growing Bags Near Me)

These PB95 planter bags are 240 microns thick and each bag holds 50 litres of potting mix. They are durable and won’t rip which makes them great for...

From$230.50

Did you find what you are looking for?

You might be interested in exploring related Latin Names - Astelia Dianella and Phormium, or related Categories - Growing media Planter Bags and Flaxes.

Search flax growing zone

What is the Flax Growing Zone?

In New Zealand, the flax growing zone largely encompasses temperate coastal and lowland areas, where mild winters and moderate rainfall prevail. Both the iconic Phormium tenax and hybrid cultivars like Phormium 'Moonraker' (Moonraker Flax) adapt well to a range of climates, but they truly excel in zones where frosts are rare and the soil remains well-drained year-round. While New Zealand flaxes are especially suited to zones 8 to 10 on the international hardiness scale, they are known for withstanding coastal winds, droughts once established, and even the occasional cold snap.

Growing Conditions for Healthy Flax

To get the best results in your flax growing zone, consider the following factors:

Sun and Soil Preferences

Most flaxes, including Phormium 'Anna Red' (Anna Red Flax) and Phormium 'Licorice and Lime' (Licorice and Lime Flax), love full sun, but can tolerate partial shade. They prefer fertile, free-draining soils—clay-based soils should be improved with compost or sand to prevent root rot. Good drainage is especially important in regions with high rainfall or humidity.

Cold Tolerance

Generally, flax plants can survive short, light frosts. However, for gardeners in cooler inland regions, extra winter protection may help, especially for colourful hybrids like Phormium 'Cream Delight' (Cream Delight Flax). Mulching and planting in sheltered spots will provide an extra layer of security during chilly weather.

Choosing the Right Flax for Your Zone

Choosing a variety suited to your specific flax growing zone makes all the difference. Classic Phormium tenax is renowned for its resilience and can handle harsher sites, while eye-catching cultivars like Phormium 'Moonraker' (Moonraker Flax), Phormium 'Licorice and Lime' (Licorice and Lime Flax), and Phormium 'Anna Red' (Anna Red Flax) are ideal for creating striking focal points in safe, sunny beds. If you’re keen on lighter, variegated foliage, Phormium 'Cream Delight' (Cream Delight Flax) brings fantastic contrast to mixed borders.

Flax in Your Garden

Once established in the right flax growing zone, these plants require minimal attention—just remove any old leaves now and then, and give them occasional water in extended dry spells. Whether you’re landscaping a costal bach, urban yard, or rural retreat, there’s a New Zealand flax to suit every style and climate. Explore our quality range to find the perfect flax for your garden, and enjoy year-round confidence in their performance and beauty.


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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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