Is your Florida bahiagrass lawn looking lackluster? Proper fertilization is the key to keeping it green and healthy. Fertilize from spring to early fall in Central and North Florida and all year round in South Florida.
Feed too early and a late frost can burn the new growth. Feed too late and the nutrients wash into the nearest waterway instead of into your roots. The best time to fertilize bahiagrass in Florida depends on where you live in the state.
Getting the timing, product, and application rate right (while staying compliant with county rules) can be tricky. A lawn treatment service plan from LawnStarter takes all of that off your plate.
| Key Takeaways |
|---|
| • Fertilize 1 to 3 times per year from spring green-up through fall in Central and North Florida, and fertilize year-round in South Florida. • Use a slow-release nitrogen fertilizer with little to no phosphorus such as a 15-0-15. Add iron if the grass is still yellow after feeding it with nitrogen. • Check your county’s summer fertilizer blackout rules before applying between May and October. |
Best Time to Fertilize Bahiagrass in Florida
The University of Florida (UF/IFAS) recommends 1 to 3 fertilizer applications per year for bahiagrass, from April through September in Central and North Florida. In South Florida, where growth never fully stops, you may fertilize any time of the year.
| Season | Timing for Bahiagrass in Florida |
| Spring | Early April (Central FL), mid-April (North FL) |
| Summer | June through August |
| Fall | Early September |
Central and North Florida Bahiagrass Fertilization
For Central and North Florida, the active growing season runs from mid-spring to early fall. That’s the window when your bahiagrass actually takes up nutrients. Fertilizing outside this window wastes money and can damage your lawn.
Mid-Spring (April to May)
Start fertilizing in early April for Central Florida and mid-April for North Florida. This initial feeding is crucial as it promotes growth and helps the grass recover from winter dormancy.
Plus, if you live in a county with a fertilizer ban starting June 1, now it’s the best time to feed your bahiagrass lawn with nitrogen for the growing season.
Summer (June to August)
No fertilizer ban? You can make another application mid-summer to support your lawn through Florida’s hottest months. But only if your county allows it.
Florida summer fertilizer blackout: Check if your county or city has a fertilizer blackout before applying in summer. Orange County and many others prohibit nitrogen and phosphorus applications between June 1 and September 30.
During the blackout, you can’t apply nitrogen and phosphorus, but you can still feed bahiagrass with other nutrients, such as:
Potassium: It’s often deficient in Florida soils and doesn’t harm bodies of water. Kelp meal is a good natural source.
Iron: Feeds the lawn and keeps it green during summer.
Micronutrients: For example, manganese and magnesium.
Leave grass clippings on your lawn after mowing. They’ll feed the soil with nitrogen.
Early Fall (September)
The University of Florida recommends making the final fertilizer application by mid to late September in North Florida. Fertilizing too late pushes tender new growth into the path of early frosts.
In Central Florida, you have a slightly wider window, with early October as your cutoff.
See Related: The Best Lawn Fertilization Schedule and Tips for Florida
South Florida Bahiagrass Fertilization
In South Florida, where bahiagrass grows year-round, you may apply fertilizer throughout the year. Follow UF/IFAS guidelines for your specific lawn conditions and local fertilizer restrictions.
County-level summer blackout rules apply in many South Florida counties, with some counties, such as Miami-Dade and Monroe, covering a longer period, from May 15 to October 31.
Always check your local rules before any summer application and plan accordingly.
See Related: Cities Limiting Use of Lawn Fertilizers and Pesticides
When to Fertilize a New Lawn in Florida
Wait 30 to 60 days after planting before applying any fertilizer to a new bahiagrass lawn. The root system isn’t developed yet, so fertilizing earlier can cause nutrients to leach or run off, potentially polluting nearby groundwater or surface water.
Holding off won’t hurt turf health or slow establishment. Also wait 14 to 21 days before the first mowing, until the roots have “pegged down” and the sod can’t be lifted easily.
Types of Fertilizer for Bahiagrass in Florida
Bahiagrass in Florida needs the right balance of nitrogen, potassium, and sometimes iron. UF/IFAS recommends a fertilizer with a nitrogen-to-potassium ratio of 2:1 or 1:1, with little to no phosphorus unless a soil test indicates a deficiency.
A product like 15-0-15, 15-2-15 or 16-2-8 fits those parameters. Always soil-test before adding phosphorus.
Nitrogen: Nitrogen is essential for a dark green lawn. Use slow-release nitrogen fertilizers for a steady nutrient supply.
If you use quick-release nitrogen, follow the Florida fertilizer rules:
Apply no more than 0.7 pounds of soluble nitrogen per 1,000 square feet at one time.
Spring and summer applications can reach 2 pounds only when at least 65% is controlled-release.
Phosphorus: Phosphorus aids root development but should be added only if a soil test shows a deficiency.
Many Florida soils already have sufficient phosphorus. That is why ratios with 0 or 2 in the middle (e.g. 15-0-15, 15-2-15) are specifically recommended.
If the soil test report shows a phosphorus deficiency, follow its recommendations when choosing the fertilizer.
Potassium: Potassium is vital for overall plant health and stress resistance. Balanced fertilizers often meet the potassium needs of bahiagrass, and potassium for lawns is especially important for heat and drought resistance.
Iron: Bahiagrass is particularly iron deficient in soils where pH is 7.0 or higher.
Also known as iron chlorosis, the deficiency shows up as yellowing grass blades even when nitrogen levels are adequate, especially in spring. Look for fertilizers containing ferrous sulfate or other iron chelates.
See Related:
Leave Bahiagrass Fertilization to LawnStarter
Tired of tracking fertilizer schedules and county blackout rules? Fertilizing bahiagrass can be handled as part of a lawn treatment service plan from LawnStarter. Get an instant quote and take fertilization off your to-do list for good.
FAQs
Yes, organic fertilizers can work well on bahiagrass in Florida, especially if you want slow, steady feeding and improved soil health.
Look for yellowing leaves, slow growth, and thin, patchy areas. All these are signs your bahiagrass needs fertilizing.
Yes, if you over-fertilize your lawn, it can encourage disease and cause nutrient runoff into Florida’s waterways. Stick to the recommended 1 to 3 applications per year using slow-release nitrogen, and always follow your county’s application rate guidelines to avoid burning the grass.
Read More: Bahiagrass Lawn Maintenance Guide
Main Image: Closeup of bahiagrass in a lawn. Image Credit: Forest and Kim Starr / Flickr / CC BY 2.0
