Cyperus acuminatus, commonly referred to as tapertip flatsedge or pale umbrella-sedge, is an annual herb native to a variety of wetland habitats including riverbanks, marshes, and wet meadows across North America. It thrives in moist to wet soils and is often found in ephemeral wet areas, from large rivers to roadside ditches. Cyperus acuminatus typically grows up to 16 inches tall and is characterized by its slender, paper-thin stems and distinctive spherical inflorescences. The inflorescences bear several spikelets, each containing flowers that produce oval-shaped achene fruits.

Tapertip flatsedge is valued for its role in soil stabilization and as a component of wetland plant communities, contributing to biodiversity. It is not commonly used in traditional garden settings but can be an interesting addition to rain gardens or naturalized wetland areas. This plant prefers full sun to part shade and requires consistently moist to wet soil conditions. It is relatively low maintenance but may require management to prevent it from spreading too aggressively in favorable conditions. While not prone to serious diseases or pests, it can become invasive in some areas outside its native range, so caution is advised when introducing it to non-native wetland habitats.CC BY-SA 4.0