Phormium ‘Platt’s Black’ is a dramatic New Zealand Flax known for its deep, almost black foliage and strong architectural form. The long, strap like leaves grow upright with a slight arch, creating a bold silhouette that stands out in the landscape, especially when paired with lighter colored plants.

The color is one of its biggest draws. In full sun, the leaves take on a rich, dark burgundy to near black tone that adds depth and contrast, making it a great focal point or anchor in a planting design.

This variety has a naturally upright, clumping habit and works well as a statement plant, in mass groupings, or as a structural accent in mixed beds. It also does well in containers where its color and form can really be appreciated up close.

While it is mainly grown for its foliage, mature plants may occasionally produce tall flower spikes with tubular blooms that can attract birds and pollinators.

It performs best in full sun to partial shade and prefers well drained soil. Once established, it is drought tolerant and fairly low maintenance, though it will benefit from occasional deep watering during hot periods. It also handles coastal conditions well, including wind and salt exposure.

Phormium ‘Platt’s Black’ typically grows about 4 to 6 feet tall and 3 to 5 feet wide, forming a bold, upright clump over time. It is well suited for USDA zones 8 through 11 and is hardy down to around 20 to 25 degrees Fahrenheit. The foliage is evergreen. 

This plant has low toxicity and is generally a safe choice for gardens with pets and children.

The flowers may attract pollinators, and birds are often drawn to the plant when in bloom.

It is generally deer and rabbit resistant, making it a dependable option for low maintenance landscapes.

‘Platt’s Black’ fits especially well into modern, Mediterranean, and coastal garden designs, where its dark foliage can be used to create contrast and strong visual structure.

With its bold color, upright form, and easy care nature, this is a great choice for adding depth and a bit of drama to the landscape.