How possums got to New Zealand

The brushtail possum, known in Australia as a common backyard visitor and manageable part of a balanced ecosystem, was first brought to New Zealand in 1837 by European settlers hoping to establish a fur trade. Those first animals did not survive. People kept trying. The first population to take hold was in Southland in 1858, and from there, the spread was relentless.

By 1921 the Government had made it illegal to bring any more possums into the country. It was already too late. They were spread across New Zealand and no legislation was going to stop what was already in motion. In 1946, possums were officially declared a pest. By 1950, they occupied more than half of New Zealand's land area and were still spreading. Fiordland and Northland were among the last regions to be reached: Northland had almost no possums in the 1960s, but by the 1990s, an estimated 10 to 15 million lived there alone.

At their peak in the 1980s, the possum population reached between 50 and 70 million animals. New Zealand currently spends more than $110 million per year on possum control. The damage they cause to farming costs an additional $35 million annually. Australia had natural predators that kept possum populations in check. New Zealand had none. The result is one of the worst ecological disasters in the country's modern history.

Possums are browsers. They eat leaves, buds, flowers, fruit, and nectar. In New Zealand's native forests, which evolved over millions of years without any mammalian browsers, the plants have no defences against this kind of sustained pressure. Possums strip the canopy and devastate the trees that native birds, insects, and lizards depend on for food and shelter. They were also long assumed to eat only plants. In 1993, possums were filmed eating the eggs and chicks of the endangered kokako. They have since been recorded preying on kiwi, kereru, tui, fantail, and muttonbird, among others.

They also carry bovine tuberculosis, transmissible to cattle and deer. Control programmes using trapping, shooting, and aerial operations are ongoing. The problem is not going away.

The fibre that nobody expected

The brushtail possum, despite all of the ecological damage it causes, grows one of the most remarkable natural fibres found anywhere in the world. Possum down, the fine undercoat fibre beneath the coarser outer guard hairs, has a hollow core. This hollow structure traps air exceptionally well, which is why possum down provides warmth far in excess of what its weight would suggest. It is approximately 55 percent warmer than merino wool of equivalent weight, and lighter than cashmere.

The fibre has a fineness of around 14 to 16 microns, which places it in the same category as ultra-fine merino and cashmere. It is genuinely soft against skin. It does not pill at the rate that many comparable fibres do. And blended with ZQ merino, which provides structure, elasticity, and durability, it produces a fabric with performance properties that are difficult to find in any other combination.

Possum down is not widely available. It is not farmed. It comes entirely from the control operations that are conducted anyway, as a necessary part of New Zealand's biosecurity programme. The fibre would be discarded if it were not used. Using it transforms an unavoidable cost into a resource. That is not a small thing.

How possum down becomes a garment

The process of getting possum fibre from a control operation to a luxury knitwear brand involves a supply chain that is genuinely small and genuinely New Zealand. Trappers and hunters working throughout the country collect pelts and fibre. The fibre is processed and graded, then spun, typically blended with merino to improve yarn strength and consistency. The resulting yarn is what NZ Charly uses in our garments.

There is no large-scale industrial possum fibre operation. The quantities involved are limited by the nature of how the fibre is harvested. This means possum merino yarn is genuinely scarce, and products made from it are genuinely limited. When we say our pieces are limited edition, it is not a marketing device. It reflects the real constraints of working with a fibre that can only be produced in this way, in this place.

The ethics of using possum fibre

People occasionally ask whether it is ethical to use an animal fibre that comes from a pest control programme. It is a fair question and one worth answering directly.

Possum control in New Zealand is not optional. It is a conservation imperative. Possums are actively destroying the native forest ecosystems that New Zealand's biodiversity depends on. Control operations happen regardless of whether the fibre is used. The choice to use the fibre is not the cause of the possum's death. The ecological necessity of reducing possum numbers is the cause. Using the fibre means that something of value is recovered from a process that would otherwise produce only waste.

By contrast, leaving the fibre unused and buying a luxury alternative that has been farmed, sheared, transported across the world, and processed through an industrial supply chain involves its own set of costs and compromises. The ethics of fibre sourcing are rarely simple. In this case, possum merino occupies a genuinely unusual position: a luxury fibre that is simultaneously an ecological contribution.

What possum merino feels like to wear

People who have not worn possum merino often expect something rougher, earthier, more utilitarian than it turns out to be. The reality is the opposite. It is one of the softest, lightest, most naturally warm fibres that exists. People pick up a possum merino jumper and their first response is almost always surprise. It's so light. How can something this light be this warm? The hollow core of the fibre is the answer. Air is the insulator. The fibre just holds it in place.

A well-made possum merino garment will perform across a wider range of conditions than almost anything else you can wear. It is warm when you need warmth and it breathes when you are active. It manages moisture. It does not hold odour. It softens with wear rather than degrading. And it comes from here, made by people you can reach, from a fibre that grows in the bush outside your window.

Why possum merino is at the heart of what we make

Charlotte founded NZ Charly because of a possum merino jumper she made during her fashion degree and wore for years without ever wanting to take it off. That jumper started conversations every time she wore it. Not because it looked remarkable, though it did, but because of how it felt, and because the story behind it is one that only New Zealand can tell.

We use possum merino because it is the best fibre we have ever worked with. We use it because it comes from here. And we use it because buying it is a small but real act of support for the people managing New Zealand's land, the trappers collecting fibre, and the conservation outcomes that depend on that work continuing.