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Mountain Flax

Phormium Cookianum

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Overview

Phormium cookianum, commonly known as Mountain Flax, is a robust, evergreen perennial sporting sword-like leaves, reaching up to 3 ft in length. This New Zealand native thrives in USDA zones 8-10, preferring well-drained soils and full to partial sun. It boasts unique, curving yellow or red flower spikes up to 5 ft tall, adding a dramatic touch to the landscape. Low-maintenance; ideal for mass planting and coastal gardens.

Sun Full, HalfWater Extra in Summer, Low, Medium, Very LowZones 8–10
Mountain Flax (Phormium Cookianum) — commonly known as Mountain Flax
Mountain Flax (Phormium Cookianum) — adding a dramatic touch to the landscapeMountain Flax (Phormium Cookianum) — curving yellow or red flower spikes up to 5 ft tallMountain Flax (Phormium Cookianum) — reaching up to 3 ft in lengthMountain Flax (Phormium Cookianum) — evergreen perennial sporting sword-like leavesMountain Flax (Phormium Cookianum) — commonly known as Mountain FlaxMountain Flax (Phormium Cookianum) — making it an ideal focal point or accent plant.<br><br>The leaves of Mountain Flax offer a variety of colors+61

Culture

Sun
Full, Half
Water
Extra in Summer, Low, Medium, Very Low
USDA zones
8–10

Shape & size

Classification

Family
Agavaceae

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Photos (68)

Mountain Flax (Phormium Cookianum) — This New Zealand native thrives in USDA zones 8-10, preferring well-drained soils and full to partial sun
Mountain Flax (Phormium Cookianum) — adding a dramatic touch to the landscape
Mountain Flax (Phormium Cookianum) — curving yellow or red flower spikes up to 5 ft tall
Mountain Flax (Phormium Cookianum) — reaching up to 3 ft in length
Mountain Flax (Phormium Cookianum) — evergreen perennial sporting sword-like leaves
Mountain Flax (Phormium Cookianum) — commonly known as Mountain Flax
Mountain Flax (Phormium Cookianum) — making it an ideal focal point or accent plant.<br><br>The leaves of Mountain Flax offer a variety of colors
Mountain Flax (Phormium Cookianum) — Low-maintenance; ideal for mass planting and coastal gardens
Mountain Flax (Phormium Cookianum) — commonly known as Mountain Flax or Wharariki
Mountain Flax (Phormium Cookianum) — is a robust and versatile perennial native to New Zealand
Mountain Flax (Phormium Cookianum) — Its architectural form and richly textured foliage add a touch of exotic sophistication to landscape designs
Mountain Flax (Phormium Cookianum) — dramatic flower spikes can shoot up to an additional 6 to 10 feet
Mountain Flax (Phormium Cookianum) — providing visual interest throughout the year
Mountain Flax (Phormium Cookianum) — from coastal exposure to partial shade
Mountain Flax (Phormium Cookianum) — It requires minimal maintenance once established
Mountain Flax (Phormium Cookianum) — consider its need for space
Mountain Flax (Phormium Cookianum) — as the plant's foliage can be quite expansive
Mountain Flax (Phormium Cookianum) — Space them approximately 3 to 4 feet apart to allow for mature growth
Mountain Flax (Phormium Cookianum) — withstanding temperatures down to approximately 20&deg;F to 25&deg;F
Mountain Flax (Phormium Cookianum) — though it should be protected from harsh
Mountain Flax (Phormium Cookianum) — <br><br>Mountain Flax's resilience
Mountain Flax (Phormium Cookianum) — coupled with its striking appearance
Mountain Flax (Phormium Cookianum) — makes it a valuable addition to borders
Mountain Flax (Phormium Cookianum) — perennial / shrub for full or half

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