Common cottongrass

Common cottongrass, scientifically known as Eriophorum angustifolium, is a perennial herbaceous plant belonging to the Cyperaceae family. It is recognized primarily for its role in wetland ecosystems and as a specialized crop for rewilding degraded peatlands.

The species is native to northern temperate and arctic regions across the Northern Hemisphere. It typically thrives in acidic, waterlogged soils such as bogs, fens, and moorlands, where it demonstrates remarkable resilience to poor nutrient availability and saturated root zones.

Morphologically, the plant is characterized by its rhizomatous growth habit and narrow, grass-like leaves. The most distinct feature is the fruit development, where the perianth bristles elongate into white, silky cotton-like tufts, providing the plant with its common English name and high ornamental value.

Cultivation of Common cottongrass requires constant soil moisture and an acidic pH level. It does not demand fertilization, as it is evolutionary adapted to nutrient-poor environments. Propagation is most efficiently achieved through the division of established clumps during the early spring growth phase.

While primarily valued for ecological restoration and ornamental pond landscaping, it is remarkably resistant to common agricultural pests and diseases. The plant provides significant habitat benefits for wetland fauna and contributes to the stabilization of peat-rich soil structures.