St. Augustine Grass

Stenotaphrum secundatum · Warm-season, perennial, C4 grass.

AI-generated identification · may be incorrect
St. Augustine Grass

Grass Category

Lawn/Turf

Hardiness Zones

USDA Zones 8 through 10, sensitive to severe cold and enters winter dormancy rapidly when temperatures drop.

About This Grass

Forms a thick carpet with broad blades and upright growth reaching 2 to 4 inches. Color is blue-green to dark green, turning brown during winter dormancy in colder zones.

Blade Characteristics

Wide, flat blades with rounded, boat-shaped tips. Folded vernation with a short membranous ligule and no auricles.

Growing Information

Growth Habit

Aggressively stoloniferous, forming a dense, coarse turf by surface runners.

Sunlight & Water Needs

Requires full sun to moderate shade; performs exceptionally well in shady areas for a warm-season grass. Needs regular watering and prefers well-draining soils with a pH of 5.5 to 7.5.

Mowing & Maintenance

Mow high at 2.5 to 3.5 inches weekly during the growing season. Moderate to high maintenance requiring regular fertilization and weed control.

Identified on 9/25/2026