Yellow Nutsedge
Cyperus esculentus · Perennial (Technically a sedge, C4 photosynthetic pathway)
Grass Family
Cyperaceae (Sedge family)
Grass Category
Invasive/Weed Grass (Sedge)
Variety / Cultivar
Wild type (Not typically cultivated as a turf cultivar; considered a troublesome weed)
Hardiness Zones
USDA Hardiness Zones 3-9
About This Grass
An upright, grass-like perennial weed featuring triangular stems and yellowish-green leaves. Can grow up to 1-3 feet tall if left unmowed, often growing faster than surrounding turfgrass. Produces yellowish-brown, spikelet-type flower clusters.
Blade Characteristics
Leaves are grass-like, glossy, yellowish-green to bright green, medium width (3-8 mm), folded in the bud with a V-shaped cross-section. Stems are distinctly triangular in cross-section. Ligules and auricles are absent.
Root System
Fibrous root system featuring underground stolons that terminate in small, edible tubers (nutlets) which store energy and allow the plant to regenerate easily
Growing Information
Origin Region
Native to North America and Eurasia, now distributed globally in tropical and temperate regions
Growth Habit
Rhizomatous and stoloniferous, forming dense patches via underground tubers (nutlets)
Sunlight & Water Needs
Thrives in moist to wet soils, full sun to partial shade. Highly indicative of poorly drained, over-watered soils or compacted areas. Has low drought tolerance and enters dormancy when dry.
Mowing & Maintenance
Grows rapidly after mowing, often towering above turf within a day or two. Requires specialized post-emergent or pre-emergent sedge herbicides for control, as pulling usually leaves nutlets behind to regrow.
Special Characteristics
Poor wear tolerance, highly resilient against standard broadleaf and grassy weed herbicides due to tuber reserves, thrives in wet soil conditions where traditional turf struggles
Ecological Information
Introduced/native depending on region, often acts as an invasive agricultural and turf weed. Tubers provide food for some wildlife, but it aggressively crowds out desirable turfgrasses.