Cyperus fendlerianus

Boeckl.

Fendler's flatsedge

Cyperaceae Edible: Root, Tuber 169 iNaturalist observations

iNaturalist· cc-by-nc

iNaturalist· cc-by

Summary

Cyperus fendlerianus is a species of sedge that is endemic to the southern parts of North America. The species was first formally described by the botanist Johann Otto Boeckeler in 1868.

Description

A fast-growing perennial sedge reaching 0.7 m tall, hardy to UK zone 6, with seeds ripening August to September. Hermaphroditic, wind-pollinated flowers develop as the plant matures. Grows in light sandy or medium loamy soils with mildly acid to basic pH. Requires full sun and prefers moist or wet soil.

Edible Uses

The tubers are edible raw or cooked and are usually peeled before eating. They are starchy with a mild, potato-like flavour; roasting improves the aroma while boiling softens the texture. Nutritional value is moderate — worthwhile when the plant is abundant but rarely cultivated for food. Tuber reserves are highest from late summer into autumn. Dig carefully to avoid breaking the small tubers, wash them well, and cook promptly, especially when harvested from wet soils. Native Americans gathered these roots, demonstrating their dependable food value. No cultivated forms exist. The plant may resemble other nut sedge species, so confirm root structure before harvesting.

Medicinal Uses

None known.

Distribution

It is a temperate plant.

Where It Grows

Mexico, North America, USA,

Cultivation

A respectable but underappreciated edible sedge. Growing Conditions: Prefers moist meadows and seasonal wetlands. Habitat & Range: Western United States, especially interior regions. Size & Landscape Performance: Forms modest colonies without overwhelming plantings. Cultivation (Horticulture): Rare outside restoration projects. Pests & Problems: Generally trouble-free. Identification & Habit: Grass-like with triangular stems and clustered spikelets. Pollinators: Wind-pollinated; seeds attract birds. Plant Name: Fendler’s Flatsedge. Family: Cyperaceae. Genus: Cyperus. Common Names: Fendler’s nutgrass. USDA Hardiness Zones: Approximately 5–9. Height/Spread: 20–70 cm tall.

Propagation

Surface sow seed in spring, keeping the compost moist; germination typically occurs in 2–6 weeks at 18°C. Prick seedlings into individual pots once large enough to handle, overwinter them in a greenhouse, and plant out in late spring after the last expected frosts. Division can be done in spring or autumn — essentially a matter of harvesting tubers and replanting them. Tubers lifted in autumn are best stored in a cool, frost-free place over winter and planted out the following spring.