Yellow Nutsedge (Grass-like Sedge)
Cyperus esculentus · Warm-season, Perennial, C4 monocot (Technically a sedge, not a true grass)
Grass Family
Cyperaceae (Sedge Family)
Grass Category
Invasive/Weed Grass (Commonly found in turf and gardens)
Variety / Cultivar
Common wild type (No specific horticultural cultivar)
Hardiness Zones
USDA Hardiness Zones 3 through 10; heat tolerant and enters dormancy/dies back to tubers in winter.
About This Grass
An upright, yellowish-green monocot that grows faster than most turfgrasses. It has a triangular stem (characteristic of sedges) and forms clusters of long leaves that are waxy and smooth.
Blade Characteristics
Blades are medium width (3-10mm), V-shaped (folded), with long tapered points. They are shiny, yellowish-green, and have a thick mid-vein. Vernation is folded; ligules and auricles are absent.
Root System
Extensive fibrous roots with underground rhizomes ending in starchy tubers (nutlets). This system makes it highly difficult to eradicate by hand pulling.
Growing Information
Origin Region
Native to North America, Europe, and parts of Asia and Africa; thrives in temperate and subtropical climates
Growth Habit
Rhizomatous and tuber-forming; spreads via underground rhizomes and small nut-like tubers (nutlets)
Sunlight & Water Needs
Prefers full sun and wet, poorly drained soils, though it is highly adaptable to moist or irrigated garden beds. High water needs but tubers survive drought.
Mowing & Maintenance
Grows faster than grass, usually requiring mowing at 2-3 inches to mask it; however, it is a weed and typically managed via herbicides or improved drainage rather than maintenance levels.
Special Characteristics
Extremely high wear tolerance; very difficult to kill because tubers remain in soil; resistant to many standard broadleaf and grass-specific herbicides; distinctive triangular stem.
Ecological Information
Native to North America; tubers are an important food source for some waterfowl and hogs; an aggressive competitor in landscape and agricultural ecosystems that can displace native flora.