How to identify it
Broad, flat, coarse blades on thick above-ground runners; blue-green color; forms a spongy, dense lawn.
Growing conditions
| Sun | The best shade tolerance of the warm-season grasses; also fine in sun |
| Traffic | Fair — coarse and quick-spreading but bruises under heavy play |
| Water | Moderate–high; the thirstiest southern grass |
Where it fits — by region
- Cool-season states: Not adapted — winter kills it.
- Transition zone states: Only the warmest corners of the state; a single hard winter can take out the lawn.
- Warm-season states: The default in the humid coastal South, and the answer for southern shade.
Caring for a St. Augustine lawn
The calendar does the heavy lifting: establish and feed from late spring through summer, put pre-emergent down in late winter, and stop nitrogen 6–8 weeks before frost. Local dates for every one of those jobs come from the lawn calendar lookup or your city's calendar page. Quantities come from the sod calculator and the fertilizer calculator.
Frequently asked questions
How short should I mow St. Augustine?
Keep St. Augustine between 2.5″ and 4″, and never remove more than a third of the blade in one cut. Mow at the taller end in heat or drought — longer blades shade soil and deepen roots.
Can I grow St. Augustine from seed?
No — St. Augustine doesn't produce commercially viable seed. It's established from sod, plugs, or sprigs during the late-spring warm-season establishment window; the sod calculator does the ordering math.
How much fertilizer does St. Augustine need?
About 2–4 lbs of actual nitrogen per 1,000 sq ft per year, applied through the warm growing months. The fertilizer calculator turns that into pounds of product from your bag's N-P-K.
Where does St. Augustine grow well?
Florida and Gulf Coast lawns, shaded southern yards, fast coverage from sod.