Phormium tenax 'All Black'

New Zealand flax

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Key information

Plant type

Hardy perennial

Flower colour



Dramatic foliage



Skill level


Phormium tenax 'All Black'

Plant details

Phormiums or New Zealand flax are popular plants for adding an architectural touch to the patio planting scheme. Their elegant long leaves are evergreen, making them ideal plants for winter colour.

Phormium tenax 'All Black' produces strong upright tufts of very dark foliage which is the perfect complement to brightly coloured perennials and bedding plants. They can be damaged by very strong cold winds, so plant in a sheltered spot with moisture retentive but free draining soil.

Family: Phormiaceae

Genus: Phormium

Species: tenax

Cultivar: All Black

Plant type: Hardy perennial

Flower colour: Brown

Foliage colour: Black

Feature: Dramatic foliage

Sun exposure: Full sun

Soil: Well-drained/light, Clay/heavy, Moist

Hardiness: Hardy

Skill level: Beginner

Height: 200cm

Spread: 250cm

Time to divide plants: March to May

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