Kyllinga Weed (Green Kyllinga)
Kyllinga nemoralis · Warm-season, Perennial, C4 sedge
AI-generated identification · may be incorrect
Grass Category
Invasive/Weed Grass, Turf Weed
Hardiness Zones
USDA Hardiness Zones 7-11, highly tolerant of warm humid climates.
Grass Family
Cyperaceae (Sedge family)
Variety / Cultivar
Common Green Kyllinga (Wild type)
About This Grass
Forms dense, fine-textured, bright light-green patches that often grow faster than surrounding turfgrass. Displays distinctive three-way branching seed heads that are greenish to brown at maturity.
Blade Characteristics
Fine-textured, narrow leaves (under 2mm wide), folded in the bud, pointed tips, smooth, bright yellow-green to light green color.
Root System
Aggressive, fine rhizomes and fibrous roots that form a tight network beneath the soil surface, making manual removal difficult.
Growing Information
Origin Region
Native to tropical and subtropical regions of the Old World, now widely naturalized in lawns throughout North America.
Growth Habit
Rhizomatous, forming dense mats and distinct light green circular patches.
Sunlight & Water Needs
Thrives in full sun to partial shade and prefers moist, poorly drained soils, though it adapts well to standard lawn irrigation.
Mowing & Maintenance
Resilient to low mowing heights due to its low-growing flower heads; requires selective herbicides for control as standard mowing spreads seed heads.
Special Characteristics
High weed invasiveness in turfgrass, resistant to many common broadleaf herbicides because it is a sedge rather than a true grass.
Ecological Information
Acts as an aggressive lawn weed in managed turf; provides minimal wildlife value compared to native grasses and rapidly crowds out desirable turf species in damp areas.