raupō the great reed of every lowland wetland

Size
Height: 1.5–2.5 m
Lifespan
5–10 years
Diet
Not applicable (plant)
Habitat
Freshwater wetlands, swamps, marshes, lake margins, and slow-moving streams. Prefers shallow, still or slow-moving water with muddy bottoms. Often forms dense stands in nutrient-rich wetlands. Tolerates seasonal flooding.
Range
Found in wetlands throughout New Zealand from Northland to Stewart Island. Most common in lowland swamps, marshes, and lake margins. Also found in Australia and throughout the Pacific and Asia.
Endemism
Native
Main Threats
Habitat loss from wetland drainage and land development is the primary threat. Water pollution and nutrient runoff. Competition from invasive wetland weeds. Climate change affecting water levels.
Population
Populations have declined significantly due to widespread wetland drainage for agriculture and urban development. Remaining stands are often small and fragmented. Wetland restoration projects have helped protect some populations.
Conservation Status
Not Threatened
A tall, reed-like wetland plant with distinctive brown, sausage-shaped flower spikes. Raupō grows in dense stands in swamps, marshes, and along lake margins, its leaves reaching up to two metres in height. The leaves are long, narrow, and sword-shaped, rising straight from the rhizome. The flower spikes are the most distinctive feature – a thin male spike at the top, and a thick, brown, velvety female spike below. What makes it special? Its usefulness. Raupō was one of the most important plants for Māori. The pollen (pungapunga) was collected by shaking the male spikes over a mat, then baked into cakes. The cakes were sweet and nutritious, a delicacy shared during gatherings. The rhizome (underground stem) provided a starchy food, roasted or boiled like a potato. The leaves were used for weaving mats, baskets, and roofing. The leaves were harvested, dried, and softened before being woven into whariki (sleeping mats) and kete (baskets). The fluffy seed heads were used as tinder for starting fires, catching a spark from flint or friction. Biologically, Raupō is a pioneer of the wetland. It colonises disturbed sites, stabilising the mud with its spreading rhizomes. It reproduces by seed and by vegetative spread, forming dense stands that exclude other plants. The seeds are tiny, attached to a fluffy pappus that carries them on the wind. To see a Raupō stand is to see a green wall rising from the black water. The leaves sway in the wind, the brown spikes nod on their stems. It is a plant of the edge, of the boundary between land and water, of the places where the wetland meets the world. Raupō is not a king. It is not a warrior. It is the plant of the swamp, the one that feeds and clothes, the one that holds the mud together. It has been here for millennia. It will be here as long as the wetlands remain wet.