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, with low cold tolerance and prone to winter dormancy in cooler ranges.

About This Grass

Forms a thick, coarse carpet with blue-green to dark green leaves, growing 2 to 3 inches tall. Produces a flat, spike-like seed head at maturity.

Blade Characteristics

Wide blades with blunt, rounded tips, folded vernation in the bud, and short membranous ligules without auricles.

Growing Information

Growth Habit

Aggressively stoloniferous, forming a dense, coarse turf via above-ground runners.

Sunlight & Water Needs

Requires full sun to partial shade with high water needs; moderate drought tolerance and prefers well-drained fertile soils with a pH of 6.0 to 7.5.

Mowing & Maintenance

Mow high at 2.5 to 3.5 inches frequently during the growing season; high maintenance requiring regular fertilization and watering.

Identified on 9/26/2026