Black Flax (Phormium Black Rage)

Plant characteristics at a glance

Plant type

Flax

Botanical or cultivar name

Phormium Black Rage

Common name

Black Flax

Flower colours

not recorded

Foliage colours

not recorded

Light mentioned in source

Not specified

Flowering season in source

Not recorded

Garden use tags

Borders & edging

NZ native

Listed here as a NZ native

Colours, seasons and tolerance descriptions are indicative. Flowering and growth can differ with cultivar, weather, soil and the particular garden site.

Where Black Flax may fit in a Christchurch garden

Harakeke and ornamental flaxes provide strong structure in garden beds; check the mature plant size and safe access for maintenance.

Possible uses to explore include borders & edging. These are reference tags, not a guarantee of success on every property.

Look at existing hedges, paths, lawn edges and neighbouring plants before deciding where to place it. A compact city garden has different needs from an open rural or restoration planting.

Sun, drainage and local conditions

First establish whether the space gets full sun, partial shade or very little direct light, then check the species' requirements before placing it.

Christchurch sites can combine cold winter nights with hot, drying summer weather. Soil structure, drainage and the amount of shelter are as important as the suburb name.

Before planting, test soil drainage after rain and consider whether winter frosts, easterly winds or summer drying will affect establishment.

Care and maintenance

Keep growing crowns clear of mulch and fallen debris. Remove spent flower stalks and damaged leaves with suitable tools; established flax can be bulky and should not be cut like a hedge.

Watering, feeding and pruning should follow the exact species and site. Observe the plant through the first full growing season; adjust the plan rather than applying the same schedule to every shrub, tree or flower.

Reference and plant identification

This entry draws on factual characteristics in a publicly listed Canterbury nursery catalogue. For identification details and more botanical information, see the Goughs Nurseries listing for Phormium Black Rage ↗. Kiwi Gardeners is independent of the nursery. We do not reproduce its photographs, descriptions or stock claims.

If you are unsure of a cultivar, check the actual plant label and seek horticultural advice before purchasing. Avoid introducing regulated or invasive species, and check local rules where relevant.