What common name is associated with Phormium tenax?

Phormium tenax is commonly known as New Zealand Flax. This name reflects its native origins in New Zealand, where it grows abundantly. This plant is recognizable for its long, strap-like leaves that can vary in color from green to deep purple. New Zealand Flax is also valued for its tough, fibrous leaves, which have historically been used by Māori people for weaving and making ropes, giving it cultural significance in addition to its horticultural value.

The other options refer to different plants with distinct characteristics. Blue Lily Turf, for example, refers to Liriope muscari, a low-growing perennial with grass-like leaves but quite different foliage and growth habit compared to Phormium tenax. Japanese Forest Grass, known as Hakonechloa macra, is another type of grass that has a fine, cascading appearance and is often used in shade gardens. Black Mondo Grass is Ophiopogon planiscapus 'Nigrescens,' characterized by its dark purple-black foliage, again contrasting significantly with the attributes of New Zealand Flax. Understanding these differences helps clarify why New Zealand Flax is the correct common name associated with Phormium tenax.