Machaerina angustifolia, commonly known as Polynesian Twigrush, Narrow-leaved umbrella-sedge, Toetoe, or Narrow-leaved umbrella plant, is an evergreen perennial sedge native to the wetland ecosystems of the Central Pacific. It exhibits a moderate growth rate, reaching heights of 2-4 feet (0.6-1.2 meters) and spreading 1-2 feet (0.3-0.6 meters) wide. The plant forms dense clumps of narrow, upright, dark green leaves, and its white flowers, though inconspicuous, appear on spikes above the foliage in spring and summer, adding a subtle texture to the landscape.

Machaerina angustifolia is valued for its ability to stabilize soil in wet areas and is often used in riparian plantings, wetland restoration, and as an ornamental grass in water gardens or bog gardens. It thrives in full sun to part shade and prefers consistently moist conditions, making it suitable for planting in medium to slow-draining clay or loam soils. While it requires medium to high amounts of water, it is relatively low maintenance once established. Gardeners should be aware that it can become invasive outside its native range, so it is crucial to consult local regulations before planting.CC BY-SA 4.0