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phormium platts black flax

Phormium 'Platts Black' flax is an outstanding New Zealand native that adds dramatic colour and texture to gardens of all styles. This unique flax, well-known for its striking, deep-black foliage, brings a touch of contemporary elegance to both landscapes and containers. Highly valued for its sculptural form and hardy nature, Phormium 'Platts Black' is a favourite among landscapers and home gardeners seeking a low-maintenance yet eye-catching feature. Its upright, sword-like leaves make it particularly effective in contrast plantings or when used as a bold specimen in coastal, urban, or native-inspired gardens.

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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Distinguished Appearance and Year-Round Interest

Phormium 'Platts Black' flax stands out in any garden with its arching, almost black leaves that deepen in colour as the plant matures. Its foliage holds its colour exceptionally well throughout the seasons, ensuring year-round interest and structure. Reaching between 60 to 90 cm in height, this flax is ideal for borders, mass plantings, or as part of an architectural grouping with other foliage stars such as Phormium 'Jester' or Astelia nervosa (Mountain Astelia).

Ideal Growing Conditions for Phormium 'Platts Black'

Known for its adaptability, Phormium 'Platts Black' thrives in full sun or part shade and tolerates a range of soil types, including coastal and windy sites. It flourishes in well-draining soils and is drought-tolerant once established, perfect for modern, water-wise gardens. Phormium 'Platts Black' is highly resilient to pests and diseases, making it low-maintenance and easy to grow for both novice and experienced gardeners.

Landscape Uses and Companion Planting

The dramatic foliage of Phormium 'Platts Black' flax makes it the perfect choice for inclusion in mixed borders, urban courtyards, or as a striking backdrop in native plant schemes. Combine it with other colourful flaxes like Phormium 'Evening Glow' or Phormium 'Velvet Underground' for an eye-catching foliage display. For textural contrast, consider pairing with the upright form of Cordyline Zumba or the neat, compact habit of Phormium 'Green Dwarf'.

Easy Care for Stylish Gardens

Maintenance is simple – just remove spent leaves at the base to keep your Phormium 'Platts Black' looking fresh. It rarely needs watering in established landscapes, making it an excellent choice for busy gardeners or holiday homes. Mulch lightly to suppress weeds and retain moisture, but avoid heavy organic matter around the base.

Popular Alternatives to Phormium 'Platts Black'

While Phormium 'Platts Black' flax is well-loved for its dark foliage, you may also enjoy exploring our selection of other small and colourful flaxes, such as Phormium 'Blondie', Phormium 'Royal Flush', or the vibrant Phormium 'Emerald Gem'. If you're after a compact variety for smaller gardens or mass plantings, Phormium 'Surfer' is also a fantastic option.

Bring Structure and Sophistication to Your Garden

With its bold, architectural form and incredibly low maintenance requirements, Phormium 'Platts Black' flax is a must-have for gardens across New Zealand. Whether you're seeking an accent plant, a reliable landscaper’s favourite, or a splash of dark colour for striking year-round foliage, Phormium 'Platts Black' brings style and resilience to every outdoor space.


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.

Sure, Photinia 'Red Robin' and Ficus pumila (Creeping Fig) are crowd-pleasers, but Grape Flame, Acer platanoides Globosum (Acer Globosum), and Helleborus 'Dark Hybrid' are quietly making a name for themselves.
–The Plant Company

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