Tropical Signalgrass
Urochloa platyphylla · Warm-season, annual, C4
AI-generated identification · may be incorrect
Grass Category
Invasive/Weed
Hardiness Zones
USDA Zones 8-11, highly sensitive to frost, enters winter dormancy or dies back as an annual in cooler climates.
About This Grass
Forms a low-growing, creeping mat with light green foliage and produces small, branching seed heads. Often considered a persistent turfgrass weed.
Blade Characteristics
Wide, flat, pointed blades with light green color, distinct membranous ligule, and no auricles.
Growing Information
Growth Habit
Stoloniferous, spreading rapidly with low, dense mats
Sunlight & Water Needs
Thrives in full sun to partial shade with high moisture requirements, preferring wet or poorly drained soils.
Mowing & Maintenance
Requires frequent low mowing to suppress spread; difficult to control selectively in turf without herbicides.
Identified on 10/8/2026