Phormium Black Adder
Phormium Black Adder
Phormium Black Adder
Phormium Black Adder
Phormium Black Adder
Phormium Black Adder
Phormium Black Adder
Phormium Black Adder
Phormium Black Adder
Phormium Black Adder
Phormium Black Adder
Phormium Black Adder
Phormium Black Adder
Phormium Black Adder
Phormium Black Adder
Phormium Black Adder
Phormium Black Adder
Phormium Black Adder

Phormium 'Black Adder'

Supercharge your containers with dramatic, almost black, foliage.
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Grows to
Grows To
120 cm
120 cm
Read more

Plant Care Information:

Perfect In Pots
Perfect In Pots
Plant In Sunshine
Plant In Sunshine
Winter Hardy
Winter Hardy
Easy To Grow
Easy To Grow

Product options:

5L Pot
Item: 560481
Out Of Stock
Grows to
Grows To
120 cm
120 cm
5L Pot - Item: 560481
ONLY £34.99
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  • A compact, fully hardy phormium with lustrous, deep purple almost black leaves.
  • New Zealand flax, 'Black Adder' is a striking addition to borders and containers.
  • This evergreen, clump forming variety makes an instant garden statement.
  • Ideal for a gravel garden or a Mediterranean garden.
  • A dwarf, compact form ultimately growing to around 1.2m, supplied as a well-established plant, 60-80cm tall in a 5L pot.
Key Points
Full Product Details

Product Information

Also known as New Zealand Flax, Phormium 'Black Adder' is a robust, fully hardy evergreen which forms a dense clump of sword-like leaves -  a really great plant for adding a bit of a statement to your garden.

Stunning in a border and stylish in a container, this recently introduced phormium plant has particularly attractive, deep purple, almost black, lustrous foliage, and is a compact form - meaning that it won't overshadow everything in your garden.

Phormiums prefer a hot dry site (although will tolerate partial shade) and make a great candidate for a Mediterranean garden or a gravel garden where their upright leaves make a great foil for many other coloured plants.

Easy to grow, phormium 'Black Adder' is a compact form, slightly more upright than the popular ‘Platts Black’ and needs virtually no maintenance – it may even reward you with spikes of red flowers in late summer.

Ultimately growing to around 1.2m, we supply well-established plant, 60-80cm tall in a 5L pot.

What Is Supplied

Item 560481 supplied as:
Supplied as a well-established plant, 0.8-1m tall in a 5L pot.

Top Tips

Grow in a silver-coloured container for the ultimate in contemporary planting.

Care Information

  • Plants dislike cold, damp soil, so are best planted in full sun in well-drained soil, such as in a gravel or Mediterranean-style garden.
  • Avoid planting in exposed places as wind and cold will cause die-back on the leaves and stems. If damage does occur after a harsh winter (colder than -10°C), plants can be trimmed to remove dead growth, otherwise they need no pruning.
  • In colder areas they need to be given some mulch or other protection around the base of the plant in winter.
  • Other than that, really easy!

Planting/Flowering Calendar

Planting Time
Flowering Time
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Grows to

Plant Dimensions
120 cm
120 cm
Customer Reviews

Item Reviews

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1. If you're not totally happy with your order, return it within 30 days and we'll replace or refund in full!
2. Should any hardy plant fail to thrive thereafter, we'll replace free of charge - you just pay the P&P
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