Common Pearlwort (Often mistaken for a fine turfgrass)
Sagina procumbens · Cool-season herbaceous perennial, C3 metabolism equivalent
AI-generated identification · may be incorrect
Grass Category
Lawn Weed / Alternative Ground Cover
Hardiness Zones
USDA Hardiness Zones 3 to 9, preferring cooler temperate climates with high ambient moisture.
Grass Family
Caryophyllaceae (Not a true grass, but a low-growing ground cover often managed as turf)
Variety / Cultivar
Wild type
About This Grass
Forms a dense, low-growing, moss-like or turf-like mat of bright green to yellowish-green foliage. Individual plants rarely exceed 1 to 2 inches in height unless flowering. Produces tiny, inconspicuous white flowers with four to five petals. Though not a true grass, it frequently invades lawns and is sometimes cultivated as a grass alternative in shady or moist environments.
Blade Characteristics
Leaves are very narrow, linear, succulent, opposite, and fused at the base, creating a whorled or clustered appearance along the stems. Length ranges from 5 to 15 mm with a pointed tip. Bright green color, smooth texture, lacking true grass ligules or auricles.
Root System
Shallow, fibrous root system with creeping stems that readily root at the nodes (stoloniferous), allowing it to form tightly knit patches that resist pulling.
Growing Information
Origin Region
Native to Europe, widely naturalized in North America and temperate regions worldwide
Growth Habit
Stoloniferous and mat-forming, spreading via creeping stems that root at the nodes to form dense cushion-like patches
Sunlight & Water Needs
Thrives in moist to wet soils and partial shade to full sun. Highly intolerant of extended drought and heat, preferring damp, cool microclimates.
Mowing & Maintenance
Low-growing nature means it often survives below standard mower heights. Tolerates very low mowing but is easily damaged by high heat and traffic. Requires high moisture and cool conditions for optimal appearance.
Special Characteristics
Poor wear tolerance, highly susceptible to damage from foot traffic and heat. Often considered a persistent weed in lawns, golf greens, and nurseries, thriving in compacted, poorly drained, and damp soils.
Ecological Information
Introduced species in North America. Provides minimal wildlife value compared to native flora, but its dense mats can assist in minor soil stabilization in damp, shady areas where traditional turf fails to establish.