Phormium tenax
New Zealand Flax / Harakeke
Botanical Overview:
Phormium tenax is a robust, evergreen perennial native to New Zealand and Norfolk Island. It forms dense clumps of long, sword-shaped leaves that can reach up to 3 meters in length. In summer, it produces tall flower stalks bearing tubular red or yellow flowers, rich in nectar and attractive to birds like tūī and bellbirds .
Growth Habit:
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Height: Up to 3 meters
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Width: Approximately 2 meters
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Foliage: Stiff, upright, sword-like leaves; cultivars exhibit various colors, including green, bronze, and variegated forms
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Flowers: Tubular red or yellow blooms on tall stalks during summer
Cultivation Requirements:
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Light: Prefers full sun but tolerates partial shade; variegated cultivars may exhibit better color in partial shade
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Soil: Thrives in well-drained soils; adaptable to various soil types, including poor soils
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Water: Moderate water needs; drought-tolerant once established
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Hardiness: Suitable for USDA zones 8–11; may require protection in colder regions
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Maintenance: Low; remove dead or damaged leaves to maintain appearance