Smartweed (Persicaria)
Persicaria punctata · Not a true grass; broadleaf herbaceous annual or perennial weed often found in turf
AI-generated identification · may be incorrect
Grass Category
Invasive/Weed Grass or Wetland/Riparian Weed
Hardiness Zones
USDA Hardiness Zones 3 to 9
Grass Family
Polygonaceae (Buckwheat family)
Variety / Cultivar
Wild type
About This Grass
Not a true grass, but a broadleaf herbaceous plant featuring lanceolate alternate leaves, swollen nodes with ocrea, and slender terminal spikes of small pink or white flowers. Grows up to 1 to 3 feet tall.
Blade Characteristics
Broad, lance-shaped leaves rather than typical grass blades; alternate arrangement with distinctive sheathing stipules (ocrea) at the nodes
Root System
Fibrous root system with creeping rhizomes, spreading rapidly in moist soils
Growing Information
Origin Region
North America and widely distributed globally in damp environments
Growth Habit
Stoloniferous and erect, spreading via underground roots and surface stems
Sunlight & Water Needs
Thrives in full sun to partial shade; requires moist to wet soils and tolerates poorly drained areas
Mowing & Maintenance
Resilient to mowing if cut high, but easily controlled by broadleaf herbicides or manual removal in turf settings
Special Characteristics
Indicates damp or compacted soil conditions; often hard to control in wet lawns without improving drainage
Ecological Information
Provides food for waterfowl and wildlife, helps stabilize wetland edges, but considered a persistent weed in managed lawns and gardens