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platts black flax

Platts black flax, known botanically as Phormium 'Platts Black', is a striking New Zealand native cultivar widely loved for its distinctive, deep purple-black foliage. Perfect for modern garden designs and low-maintenance landscapes, this hardy flax is celebrated for its compact habit, rich colour, and year-round interest. Whether highlighted as a bold specimen or woven among other ornamental grasses, platts black flax is a must-have for gardeners aiming to create drama and texture in their outdoor spaces.

Phormium 'Platts Black'

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Phormium 'Platts Black' is a striking New Zealand native flax variety admired for its rich, dark purple to almost black foliage. This hardy evergreen forms tidy, upright clumps that provide bold colour and structure in the garden year round. Low maintenance and tolerant of a wide range of conditions, 'Platts Black' is a versatile choice for modern landscapes, coastal gardens, and urban plantings.

Phormium Platts Black with black leaves in a garden.
  • Suited to regions:
    All regions
  • Plant type:
    Flaxes
  • Height:
    1.30 m
  • Spread:
    1.30 m
  • Flowering time:
    Summer
  • Tolerances:
    Coastal, Extended dry periods, Hardy, Wet, Wind
  • Garden uses:
    Living areas, Parks, Ponds, Pool areas, Specimen
  • Garden styles:
    Architectural, Backyard, City & Courtyard, Coastal, Frontyard, Japanese, Mediterranean, Modern, Native, Riparian
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Phormium 'Platts Black'

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Why Choose Platts Black Flax for Your Garden?

Phormium 'Platts Black' stands out with slender, arching leaves that range from deep chocolate to intense purple-black—making a dramatic feature in any setting. Its mature height of about 90 cm and tidy, clumping habit ensure that it fits seamlessly into small urban gardens, contemporary landscapes, or mass plantings along driveways and paths. These adaptable plants tolerate coastal winds, dry periods, and various soil types, making platts black flax a reliable choice throughout New Zealand.

Beautiful Combinations with Other NZ Natives

Platts black flax pairs perfectly with other native flaxes and grasses for stunning contrast and year-round interest. Try grouping with Phormium 'Evening Glow' for a vibrant red accent, or set it alongside Phormium 'Green Dwarf' to enhance its dark foliage. For softer textural contrast, consider the silvery leaves of Astelia trinervia (Kauri Grass), or plant as an edging with the compact Phormium 'Tom Thumb'.

Planting & Care Tips

Platts black flax is extremely versatile and will thrive in most well-drained soils, whether in full sun or light shade. While drought-tolerant once established, a little summer watering will keep it looking at its best during extended dry periods. To maintain its shapely form, simply remove any older or damaged leaves at the base. As with all New Zealand flaxes, platts black flax is largely pest-resistant and not favoured by rabbits or deer.

Where to Use Platts Black Flax

Other Flaxes and Grasses to Consider

If you love the look of Phormium 'Platts Black', explore other unique cultivars in our selection. Brighten up your planting combinations with the pink and green shades of Phormium 'Jester', the subtle tones of Phormium 'Emerald Gem', or the playful hues of Phormium 'Rainbow Maiden'. For something a little different, try the refreshing variegation of Phormium 'Spearmint' (Spearmint Flax) or the lush, tropical effect of Cordyline Salsa and Phormium 'Surfer'.

Order Platts Black Flax Online for NZ-Wide Delivery

Transform your garden with the bold foliage and effortless style of platts black flax. Order Phormium 'Platts Black' online today and enjoy reliable delivery direct to your door—perfect for adding structure, colour, and low-maintenance beauty to any New Zealand garden.


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