Plant
Wait for sustained soil heat
Warm-season lawns in Florida need late-spring soil warmth before seed has enough energy to germinate and spread.
FL planting calendar
When to Plant Grass Seed in Florida
Use this page for timing first. It starts with the planting window, then breaks the year into practical seedbed, watering, and weather decisions for Florida lawns.
- Best window
- Late March through June, when consistent warmth and summer rains support rapid establishment
- Soil rule
- Warm soil first, 65F+ soil
- USDA zones
- 9, 10
- Regional focus
- North Florida & Panhandle and Central Florida
How to use this calendar
Start with seed type, then trust the soil
State timing is useful because frost, rainfall, soil texture, and heat stress change the risk profile. It is still a filter, not a guarantee. Confirm the grass species, soil temperature, and watering plan before you spread seed.
Local constraints
- Sandy soil with poor nutrient retention
- Extreme humidity
- Chinch bugs
- Salt exposure in coastal areas
- Heavy summer rain
- Fungal diseases (brown patch, dollar spot)
Avoid
Do not chase early green-up
Warm afternoons can arrive before soil is ready. Early seed often stalls, thins, or loses to weeds.
Seasonal plan
Season-by-season planting plan for Florida
Use the Florida calendar as a timing sequence: prep before the window, seed when soil temperature is right, and protect new turf through the first stress season.
Best window
Late March through June, when consistent warmth and summer rains support rapid establishment
Warm-season
Warm soil first
65F+ soil
November - February
Dry Season / Winter
- 1Reduce mowing frequency in North Florida as Bermuda and Bahia enter dormancy — Central and South Florida lawns still grow, just slower
- 2This is prime seeding season for winter ryegrass overseeding in North Florida and the Panhandle
- 3Apply a winterizer fertilizer (high potassium, low nitrogen) by mid-November to harden turf before any cold snaps
- 4Monitor irrigation carefully — Florida's driest months are November through April, and newly established lawns can desiccate quickly in the low humidity
- 5Treat for large patch fungus (Rhizoctonia) which peaks in fall and spring when soil temps are between 60-75 degrees
- 6Sharpen mower blades — dull cuts invite disease during the cooler, damp mornings typical of Florida winters
March - May
Spring Transition
- 1March through May is prime warm-season seeding time — soil temperatures hit 65+ degrees by mid-March in South Florida, early April in Central, and late April in the Panhandle
- 2Apply pre-emergent herbicide for crabgrass by early March in South Florida, mid-March in Central — BUT skip pre-emergent entirely if you plan to seed within 60 days
- 3Begin your summer fertilizer program in April: 1 lb of nitrogen per 1,000 sq ft using a slow-release granular
- 4Scout for mole cricket damage starting in March — look for soft, spongy soil and small mounds of displaced sand in Bahia and Bermuda lawns
- 5Check irrigation coverage and repair heads damaged over winter — you'll need full coverage by May when the heat arrives
- 6Dethatch St. Augustine and Zoysia lawns in April if thatch exceeds 3/4 inch — this also opens the canopy for any overseeding
June - August
Wet Season / Summer
- 1Daily afternoon thunderstorms provide 1-2 inches of rain per week — back off irrigation to avoid overwatering and fungal explosions
- 2Peak chinch bug season runs June through September — inspect St. Augustine weekly for yellowing patches that spread outward
- 3Raise mowing height by 1/2 inch to reduce heat stress — Bahia at 3.5-4 inches, Bermuda at 1.5-2 inches, St. Augustine at 3.5-4 inches
- 4Apply chelated iron (ferrous sulfate or iron EDDHA) for yellowing lawns — Florida's sandy and alkaline soils leach iron fast during heavy summer rains
- 5Monitor for gray leaf spot in St. Augustine — it thrives in the 85+ degree days with 90% humidity typical of Florida summers
- 6This is NOT the time to seed — heavy rains wash away seed and seedlings are vulnerable to summer fungal diseases
September - October
Fall Transition
- 1Late September through October is the second seeding window for warm-season grasses — soil is warm but rain intensity drops off, giving seed a chance to establish before winter
- 2Apply your final nitrogen fertilizer by mid-October in North Florida, early November in Central — many counties have fertilizer blackout periods so check local ordinances
- 3Aerate compacted areas in September while soil is still warm and moist — this is especially important in high-traffic Bermuda lawns
- 4Overseed thin Bahia lawns in early October when nightly temperatures start dropping below 80 degrees
- 5Begin scouting for large patch fungus which reactivates as soil temps cool below 75 degrees — preventive fungicide in October saves headaches in November
- 6Reduce mowing frequency as growth slows in North Florida — most warm-season grasses are winding down by late October north of Ocala
Regional timing notes
Florida is not one planting zone
Use these regional notes to adjust the statewide window for elevation, soil, heat, irrigation pressure, and local grass type.
North Florida & Panhandle
From Jacksonville across to Pensacola, North Florida is the state's transition zone. Hard freezes happen — Tallahassee averages 30+ nights below 32 degrees annually, and Pensacola saw single digits in the 2022 Christmas freeze. The clay-sand mix soils here actually hold nutrients better than the pure sand further south, giving you more grass options. This is the only part of Florida where you can realistically consider Bermuda seed for a full lawn, and Bahia thrives in the acidic soils of the pine flatwoods. Gainesville and Ocala sit right on the dividing line where nematode pressure starts ramping up heading south. Zoysia sod is increasingly popular in Jacksonville's upscale neighborhoods like Ponte Vedra and San Marco.
- Bermuda seed goes down in late April through June when soil temps are consistently above 65 degrees — Pensacola warms up about 2-3 weeks later than Jacksonville
- Bahia is the default choice for larger rural lots in Baker, Columbia, and Suwannee counties — it handles the sandy-clay soils and requires almost no supplemental irrigation once established
Central Florida
The I-4 corridor from Tampa through Lakeland to Orlando and up through Ocala is Florida's lawn care ground zero. Summer heat and humidity are relentless, with 90+ degree days from May through October. The deep, sugar-sand soils of the Central Ridge (Polk, Lake, and Orange counties especially) are infamous for nematode infestations that can destroy even established St. Augustine in a single season. Water restrictions are common — most Central Florida counties limit irrigation to two days per week during normal conditions and one day during drought. If you're seeding here, Bahia is your most reliable option: it handles the sand, resists nematodes, and survives on minimal irrigation. Bermuda seed can work for sunny, high-traffic areas, but expect to irrigate heavily during establishment.
- Nematode testing through your county UF/IFAS Extension office costs about $25 and tells you exactly what you're dealing with before you invest in seed or sod
- The Polk County sandy ridge soils drain so fast that newly seeded lawns need twice-daily watering for the first 3 weeks — set your irrigation accordingly
South Florida
Below Lake Okeechobee, you're in the tropics. Miami-Dade, Broward, and Palm Beach counties sit in Zone 10a/10b with essentially zero frost risk. The soil profile changes dramatically here — instead of deep sand, you hit limestone and shell rock within inches of the surface in many areas, creating alkaline conditions (pH 7.5-8.5) that lock out iron and manganese. Coastal properties from Jupiter to Key Biscayne deal with salt spray, saltwater intrusion into irrigation wells, and corrosive air that affects everything. Seeding is uncommon in South Florida; most lawns are St. Augustine or Zoysia sod. However, Bermuda seed can work for sunny residential lawns, and Bahia handles the western communities (Weston, Miramar, western Boca) where soils are muck-based from former Everglades wetlands.
- South Florida's alkaline limestone soils cause iron chlorosis (yellowing) in almost every grass type — plan on quarterly chelated iron applications year-round
- If you're on a coastal barrier island or east of US-1, salt tolerance is non-negotiable — Bermuda and Bahia handle salt far better than St. Augustine or Centipede
Gulf Coast
Florida's Gulf Coast from Crystal River down through Tampa Bay, Sarasota, Fort Myers, and Naples presents its own microclimate. The Gulf moderates temperatures slightly compared to inland areas — Fort Myers is typically 2-3 degrees cooler than Arcadia just 30 miles east. But the salt exposure is significant, especially on barrier islands like Siesta Key, Sanibel, Anna Maria, and Marco Island. Soils range from sandy coastal fill to shell-rock hardpan in Cape Coral and parts of Lee County. Hurricane storm surge brings saltwater intrusion that can kill entire lawns overnight — the 2022 Hurricane Ian surge destroyed thousands of lawns in Fort Myers Beach and Cape Coral. Post-storm lawn recovery is a real concern, and seed is often the most practical way to re-establish turf across large damaged areas.
- After hurricane storm surge, flush your soil with fresh water for 2-3 weeks before attempting to seed — salt levels need to drop below 2 dS/m for grass to germinate
- Cape Coral's shell-rock soils make traditional lawn establishment difficult — core aerate heavily and topdress with quality topsoil before seeding Bahia or Bermuda
Next decision
Pick seed after the window is real
Once the timing works, move to the Florida seed guide for varieties matched to zones, soil, water pressure, and the grass type that fits your lawn.