pukio sedge of montane and subalpine wetland and bog

Size
Height: 60–120 cm
Lifespan
10–20 years
Diet
Not applicable (sedge). Photosynthetic.
Habitat
Wetlands, swamps, lake margins, stream banks and damp areas. Prefers moist, fertile soils with full sun to partial shade. Tolerates seasonal flooding and waterlogged soils.
Range
Throughout New Zealand from Northland to Stewart Island. Most common in wetlands, swamps and lake margins. Widespread in lowland areas.
Endemism
Endemic
Main Threats
Habitat loss from wetland drainage is the primary threat. Water pollution and degradation. Climate change affecting wetland habitats.
Population
Populations are considered stable but localised. The species is common in wetlands throughout New Zealand. It is threatened by ongoing wetland drainage. Protection of wetlands is important.
Conservation Status
Not Threatened
A distinctive sedge that forms large tussocks on raised stilts of roots. The stilt roots lift the tussock above the water, allowing the plant to survive in waterlogged soils. The roots are thick and woody, forming a dense platform. The leaves are long and arching, dark green, with a rough texture. A plant that stands above the flood. The seed heads are dark brown, almost black, and appear in summer. They are held on tall stalks above the leaves. The seeds are dispersed by wind and water. A plant that sends its children on the wind. Pukio is common in wetlands, swamps and lake margins throughout New Zealand. It is often the dominant plant in these habitats, forming large tussocks that provide shelter for birds and insects. The stilt roots create a complex microhabitat, with small pools and crevices between the roots. A plant that builds homes for others. The plant was used by Māori for weaving and for making fish traps (hīnaki). The long, strong leaves were soaked to soften them, then woven into baskets, mats, and traps. The stilt roots were sometimes used as a source of timber for small projects. A plant that made the tools that caught the fish. To find pukio is to walk the margins of wetlands and lakes. Look for the large tussocks on stilts, the dark green arching leaves, the dark brown seed heads. It is a plant of the wet places, a survivor of the swamp. The stilt roots lift it above the water, a reminder that sometimes you need to rise above the flood. The swamp is wet. The water is high. The pukio stands on its stilts, dark green leaves arching, seed heads dark against the sky. The flood rises. The pukio does not drown. It has been here for thousands of years. It will be here when the flood recedes.