When to fertilize St. Augustinegrass in Alabama?
By LawnYear editorial team · Published · Updated Windows are read from the extension publications listed under Sources; the dates are approximate.
The answer
The fertilizing window for St. Augustinegrass in Alabama is May 1 to Jul 31, per Alabama Cooperative Extension System (Auburn University), 2023. Standard schedule: 1 lb N per 1,000 sq ft in May and July, 2 lb a year. The maximum schedule is 4 lb a year, adding April and August (outside the window shown).
Full calendar: Alabama lawn care calendar · St. Augustinegrass in other states · Lawn schedule by ZIP
Approximate dates for your state. Check with your local cooperative extension office before you act.
All Alabama windows for St. Augustinegrass
The Alabama calendar on this site lists fertilizing May 1 to Jul 31 for St. Augustinegrass.
Where the dates come from
Alabama Cooperative Extension System (Auburn University): ANR-0239, Home Lawn Maintenance (2023); Table 2 monthly nitrogen schedule by grass and Table 1 mowing heights. Read on 2026-10-30.
What to check for Alabama
The fertilizing dates for St. Augustinegrass above (May 1 to Jul 31) apply to Alabama as a whole, so the north and south of the state are not told apart.
Other grasses in Alabama
For bermudagrass and centipedegrass, the Alabama calendar gives May 1 to Aug 31 for fertilizing. For tall fescue, the Alabama calendar gives Feb 1 to Apr 30 and Sep 1 to Sep 30 for fertilizing. For zoysiagrass, the Alabama calendar gives May 1 to Jul 31 for fertilizing.
Fertilizing St. Augustinegrass in other states
- Georgia: May 1 to Aug 31, per University of Georgia Cooperative Extension (2023).
- Texas: Mar 1 to Oct 31, per Texas A&M AgriLife Extension Service (2022).
- South Carolina: May 1 to May 31, per Clemson Cooperative Extension (Home & Garden Information Center), 2018.