If you’re a Palm Beach County homeowner, you’ve probably heard about the summer fertilizer ban targeting nitrogen and phosphorus. Here’s the part almost every article on this gets wrong: there is no countywide June-through-October blackout. Palm Beach County’s own ordinance has no calendar dates in it at all. Several cities inside the county do — and they don’t agree with each other.
In this guide we’ll cover what the county ordinance actually says, which municipalities impose a true calendar blackout and on what dates, the year-round rules that apply to everyone regardless of season, the real exceptions (including a couple that get misreported online), and compliant alternatives for keeping your grass green. Let’s dig in.
What Palm Beach County’s Ordinance Actually Says
The governing law for unincorporated Palm Beach County is the Florida-Friendly Fertilizer Use Ordinance — Code of Ordinances Chapter 11, Article XVI, adopted as Ordinance No. 2012-039.
Section 11-406 governs timing, and it reads:
“No applicator shall apply fertilizers containing nitrogen and/or phosphorus to turf and/or landscape plants during the prohibited application period or to saturated soils.”
Notice what isn’t there: any dates. The county’s restriction is weather-triggered, not calendar-triggered. The “prohibited application period” is defined in Section 11-402 as any time when the National Weather Service has a flood watch or warning, tropical storm watch or warning, or hurricane watch or warning in effect for any portion of Palm Beach County — or when heavy rain of 2 inches or more within 24 hours is likely.
In practice, that fires constantly between June and October. But it is not the same thing as a five-month ban, and the distinction matters: in unincorporated Palm Beach County you are legally allowed to apply nitrogen on a clear, dry July morning with no watches in effect — and you are prohibited from applying it on a stormy day in February.
The ordinance also bars application to saturated soils, defined with a test you can run with your own two feet: soil counts as saturated “if standing water is present or the pressure of a person standing on the soil causes the release of free water.”
This applies to you personally, not just to lawn companies. Section 11-402 defines an applicator as “any person, including but not limited to, residential homeowners, commercial and institutional applicators.”
Where the true calendar blackouts come from is the municipal level. Each of Palm Beach County’s 39 cities, towns and villages adopted its own version of the ordinance, and a number of them wrote in hard summer dates the county never had. That’s the next section.
Palm Beach County Fertilizer Rules: City-by-City Differences
Palm Beach County jurisdictions fall into three camps, not two. Some have a hard calendar blackout ending September 30. Some run a month longer, to October 31. And a significant number — including the unincorporated county itself — have no calendar blackout at all, only the weather triggers described above.
The Three Groups
Group 1: June 1 – September 30 calendar blackout. No fertilizer containing nitrogen or phosphorus, period, for those four months. Verified in: Jupiter, Town of Palm Beach, and Juno Beach.
Group 2: June 1 – October 31 calendar blackout. Same prohibition, one month longer. Verified in: North Palm Beach.
Group 3: No calendar blackout — weather triggers only. These jurisdictions adopted the county’s structure without adding summer dates. Verified in: unincorporated Palm Beach County, Boca Raton, Wellington, Royal Palm Beach, and Palm Beach Shores.
Group 3 is not a free pass. Boca Raton, for one, is stricter than the county in other ways — it requires no-phosphate products, caps readily available nitrogen at 0.7 lb per 1,000 square feet per application, and only permits application to actively growing turf. And the weather triggers alone rule out a large share of summer days in South Florida.
City-by-City Quick Reference Table
Every row below was checked against the jurisdiction’s own ordinance text or its official government page. Where we could not reach the current code, we say so rather than guess — several widely circulated versions of this table assign dates to cities that don’t have them.
| Jurisdiction | Summer N/P Blackout | Authority | Source |
|---|---|---|---|
| Palm Beach County (unincorporated) | None — weather triggers only | Ord. 2012-039; Code Ch. 11, Art. XVI, § 11-406 | Municode |
| Town of Palm Beach | Jun 1 – Sep 30 | Town Code § 42-376; Ord. 22-2018, am. Ord. 21-2019 | Municode |
| Jupiter | Jun 1 – Sep 30 | Town of Jupiter rainy-season fertilizer ban | Town of Jupiter |
| Juno Beach | Jun 1 – Sep 30 | Ordinance No. 736 (Feb. 2021) | Town of Juno Beach |
| North Palm Beach | Jun 1 – Oct 31 | Village Code § 27-76 | Village of NPB |
| Boca Raton | None — weather triggers only (but stricter product and rate rules) | Ordinance 5469, eff. Dec 31, 2018 | City of Boca Raton |
| Wellington | None — weather triggers only | Village Code § 30-154(h); “prohibited application period” at § 30-150 | Village of Wellington (PDF) |
| Royal Palm Beach | None — weather triggers only | Ch. 15, Art. VI, Div. 2; Ord. No. 860 (12-15-11) | n/a |
| Palm Beach Shores | None — weather triggers only | Ord. No. O-5-18 (8-20-2018) | Municode |
| Tequesta | Jun 1 – Sep 30 (per Village announcement; not yet confirmed against the code) | Village of Tequesta public notice | Village of Tequesta |
| Delray Beach, Boynton Beach, Palm Beach Gardens, West Palm Beach, Lake Worth Beach, Greenacres, Riviera Beach | Confirm with your city | Search “fertilizer” in your city’s Municode |
Year-Round Rules That Apply No Matter Where You Live
Whether or not your city has a calendar blackout, these apply all twelve months:
- 10-foot fertilizer-free zone. No fertilizer within 10 feet of any pond, stream, water body, lake, canal or wetland, or from the top of a seawall or lake bulkhead — reduced to 3 feet if you use a deflector shield or a drop spreader (§ 11-407). Critically, this section says “fertilizer,” not “fertilizer containing nitrogen or phosphorus.” Your potassium-only or iron product is subject to the buffer too.
- Deflector shields on rotary spreaders, positioned to throw granules away from impervious surfaces, buffer zones and water bodies (§ 11-409).
- Clean up spills immediately. Fertilizer on a driveway or sidewalk must be contained and either applied to turf or returned to the container. It may never be washed, swept or blown into storm drains, ditches or water bodies (§ 11-409, § 11-410). The same goes for grass clippings.
- No phosphorus without a soil test. Nitrogen and phosphorus may not be applied outside UF/IFAS recommendations unless a deficiency has been verified by an approved soil or tissue test (§ 11-408).
- Label rates govern. Section 11-408(a) defers entirely to FDACS Rule 5E-1.003(2), the state Urban Turf Fertilizer labeling rule. Your maximum application rate and frequency are printed on the bag and vary by region, grass species and season. The county sets no separate annual cap of its own.
The New Sod Confusion
This is where most applicators — even seasoned ones — get tripped up. Palm Beach County’s § 11-406(b) reads:
“Fertilizer containing nitrogen and/or phosphorus shall not be applied before seeding or sodding a site, and shall not be applied for the first thirty (30) days after seeding or sodding…”
Separately, § 11-407 says newly planted turf inside the fertilizer-free buffer “may be fertilized in this zone only for a sixty-day period beginning no sooner than thirty (30) days after planting.”
Those are two different provisions in the same ordinance — and they’re routinely mashed together by readers (and lawn care companies) in ways that aren’t accurate.
That’s why you’ll sometimes hear all three of these statements about the same county:
- “No fertilizer for the first 30 days.”
- “New sod gets a 60-day exemption.”
- “You can fertilize new sod during the blackout.”
Here’s how to untangle them:
- “No fertilizer for the first 30 days” — TRUE. No nitrogen or phosphorus fertilizer may be applied before sodding, or for the first 30 days after, across every PBC jurisdiction we’ve reviewed. This is independent of season and of whether any blackout is in effect.
- “New sod gets a 60-day exemption” — PARTIALLY TRUE. The 60-day language applies specifically to new sod planted inside the 10-foot fertilizer-free buffer zone along water. It permits fertilization from roughly 30 to 90 days after installation in those normally off-limits strips so the sod can establish. It is not a general exemption.
- “You can fertilize new sod during the blackout” — MOSTLY FALSE where a blackout exists. In Group 1 and Group 2 cities, the calendar blackout applies to new sod like anything else. The narrow buffer-zone provision above is the only “yes” we’ve seen. The Town of Palm Beach is the strictest case — no general new sod carve-out at all.
The practical takeaway for anyone installing sod in summer: plan for potassium, iron and micronutrient-only feeding through the establishment window, then resume full N-P-K once your jurisdiction allows it. Our blackout treatment schedule covers exactly how.
Why Were These Rules Put in Place?
These rules aren’t here to make your life harder; they’re here to protect Florida’s waterways.
If you’ve lived through a few South Florida summers, you know how intense the downpours can be. Heavy rains can wash lawn fertilizer off your yard and into storm drains, canals, lakes, and the ocean.
The nitrogen and phosphorus in fertilizer are plant nutrients, but when they end up in the water they become food for algae. Excess nutrients fuel harmful algae blooms that turn rivers and lakes green, suck oxygen out of the water, kill fish, and can produce toxins dangerous to people and pets.
That’s the logic behind the county’s weather triggers as well as the municipal summer blackouts: keep nutrients out of the water at the exact moments runoff is most likely.
Our waterways — Lake Worth Lagoon, the Loxahatchee, and nearby ocean reefs — are sensitive ecosystems. Pausing nitrogen and phosphorus fertilization during the wettest stretches gives them a chance to recover from nutrient pollution and avoid the worst of summer algal blooms.
There’s a practical benefit too: saving you money. During torrential rain, most of the fertilizer you put down washes away and never feeds your grass. Holding off until conditions are right ensures the nutrients actually stay in your soil. Win for your yard, win for the environment, win for your wallet.
What Are the Exceptions?
You might be wondering, “Are there any exceptions? What if I just planted a new lawn, or what about golf courses?” The ordinances do contain some carefully drawn exceptions — but they’re narrower than most homeowners assume.
- New Lawns & Landscaping: Covered in detail in the New Sod Confusion section above. Short version: nitrogen and phosphorus are prohibited on new sod for the first 30 days after installation, and the 60-day language is a narrow provision for sod planted inside the 10-foot water buffer — not a general carve-out.
- Golf Courses, Parks, and Athletic Fields: Sports turf is treated separately. Under county § 11-408(c), golf course turf follows FDEP’s Best Management Practices for the Enhancement of Environmental Quality on Florida Golf Courses, and parks and athletic fields follow the state label rule. Several municipalities go further and expressly exempt sports turf from their blackout provided the facility meets its BMP requirements — North Palm Beach’s § 27-76 is one example. The common thread is that these are managed by trained staff under approved plans. Home lawns don’t get the same leeway.
- Agriculture and Research Land: County § 11-411 exempts bona fide farm operations under the Florida Right-to-Farm Act, other properties with pastures used for grazing livestock, and lands used for bona fide scientific research. Your personal vegetable garden isn’t the target of the ordinance either, since it focuses on turfgrass and landscape plants — but it’s still wise to avoid heavy fertilizing right before a forecast downpour.
- Phosphorus Deficiency Documented by a Soil Test: If a soil test shows your lawn is genuinely phosphorus-deficient, phosphorus may be applied despite the general restriction. The ordinance defines an approved test as one “from the University of Florida, government, or other commercial licensed laboratory that regularly performs soil testing and recommendations.” Florida soils are naturally high in phosphorus in most cases, so this exception is rare — but real. Keep the results on file in case code enforcement asks.
- Product Formulation Requirements (year-round): Palm Beach County’s code does not impose its own slow-release nitrogen percentage. It defers to FDACS Rule 5E-1.003(2), which provides that no more than 35% of the nitrogen in a controlled-release fertilizer may be released within the first 7 days, and which sets the maximum rates printed on your bag. Individual cities may be stricter — Boca Raton, for example, caps readily available nitrogen at 0.7 lb per 1,000 square feet per application. Check your fertilizer label and your city code in fall, winter, and spring.
What Happens If You Get It Wrong
In unincorporated Palm Beach County, violations go to the county code enforcement special master. Section 11-415 authorizes fines of up to $1,000 per day, up to $5,000 per day for a repeat violation, and up to $15,000 if the violation is found to be irreparable or irreversible — plus enforcement and repair costs. Municipal penalties vary widely; the Town of Palm Beach, by contrast, sets $250 per incident and $500 for repeats.
If you hire a company, note that commercial applicators must complete the six-hour Green Industries Best Management Practices training and carry FDACS Limited Certification for Urban Landscape Commercial Fertilizer Application at all times while applying (§§ 11-412, 11-413). It’s a fair thing to ask about before signing. Worth knowing for condo and HOA readers: the ordinance’s definition of “institutional applicator” expressly includes residential properties maintained in condominium or common ownership.
If you think you have a situation that might be exempt, check your city’s ordinance or contact the UF/IFAS Palm Beach County Extension office at (561) 233-1700. When in doubt, err on the side of caution.
Summer Lawn Care Alternatives (Keeping Your Lawn Healthy Without N or P)
Whether you’re under a hard blackout or just riding out a wet stretch, your lawn doesn’t have to suffer. Grass stays green and healthy all summer with a little extra care and some savvy product substitutes. For a bag-by-bag breakdown of rates, analyses and what the research actually supports, see our blackout fertilizer buyer’s guide.
Here are the most effective compliant alternatives:
- Potassium-Rich Fertilizers: Potassium (K) isn’t restricted by any of these ordinances. Look for a 0-0-XX analysis — zero N, zero P. Sulfate of potash (0-0-50) is the gentlest option per pound of potassium delivered, which matters on our sandy soils in summer heat. Potassium supports water regulation and stress tolerance; think of a summer application as maintenance that replaces what our rains leach away, rather than a performance booster.
- Iron for Color: If your grass looks pale without its usual nitrogen feed, iron greens it up by supporting chlorophyll function — without the growth flush. One important detail specific to our soils: above pH 7, soil-applied iron is largely fixed within an hour, so foliar sprays dramatically outperform granular iron here. UF/IFAS’s homeowner rate is 2 oz of ferrous sulfate in 3–5 gallons of water per 1,000 square feet. Spray early morning, don’t water it in, and sweep hardscape first — iron stains concrete and pavers.
- Magnesium, If a Soil Test Calls For It: Magnesium deficiency yellows older, lower leaves first and gets misread as nitrogen hunger constantly. UF/IFAS puts the threshold at 20 ppm Mehlich-3 — above that, a response is unlikely. If you’re low and applying potassium anyway, K-Mag (0-0-22, ~11% Mg) delivers both. Skip dolomitic lime: it raises pH, which is the last thing our calcareous soils need.
- Organic Soil Amendments (Sea Kelp, Compost, Humic Acids): Seaweed extracts and humic/fulvic products are popular summer additions. Be candid about the evidence: results in turf research are modest and inconsistent, and the one multi-year study run in calcareous sand found no benefit. They’re unlikely to hurt, so use them if you like them — just don’t pay a premium. One compliance trap: most dry kelp meals are labeled 1-0-2, which means they contain nitrogen and phosphorus and are not blackout-legal. Liquid concentrates are frequently 0-0-0 and are fine. Read the Guaranteed Analysis, not the marketing copy.
- Focus on Pest and Disease Control: Summer in Florida is peak season for lawn pests and fungi, and a healthy, pest-free lawn handles nutrient limitations far better. Watch for chinch bugs in St. Augustine grass during hot, dry stretches, and for sod webworms and armyworms in late summer. If patches brown out despite watering, inspect for pests before assuming a nutrient problem. Likewise watch for fungal diseases like brown patch in humid weather — a lawn fungicide, better air circulation, and not watering at night all help.
- Mowing and Irrigation: Raise your mower height a notch in summer — taller grass develops deeper roots and tolerates stress better. Never remove more than a third of the blade at once. Water in early morning, deeply and infrequently, and only if it hasn’t rained. Mowing height does more for summer stress tolerance than anything in a bag.
Combine these with good cultural practices and your lawn can stay lush all summer without a drop of nitrogen or phosphorus. A lot of homeowners are surprised how well grass does in the off-season — and many find that focusing on soil health and proper maintenance pays off year-round.
When the Restricted Season Ends: Your Fall Fertilizer Plan
Once your city’s restricted season ends — October 1 for cities with a September 30 cutoff, November 1 for those that run through October 31 (see the groups above) — nitrogen and phosphorus can go back down.
Fall is one of the best feeding windows of the year in South Florida. The rainy season is over, so less fertilizer washes away; the grass is still growing; and with no frost, you can keep feeding lightly through winter so the lawn greens up strong in spring.
- Lean on potassium. It strengthens roots and helps turf resist large patch, mosaic virus and weather swings. See potassium for Florida lawns.
- Keep nitrogen moderate as nights cool, and follow a winter fertilization schedule.
- Time your fall pre-emergent for late October to mid-November. See pre-emergent timing.
Need Help This Summer? Contact Floridist for Professional Lawn Care
Keeping up a gorgeous lawn in Florida’s summer heat and following all the fertilizer rules can be a challenge — especially since, as you’ve just seen, the rules genuinely differ from one municipality to the next, and a lot of what’s published about them is wrong.
If you want to take the guesswork out of it, call in the pros. Our team tracks each municipality’s ordinance — we serve the whole county, from the Town of Palm Beach’s September 30 cutoff to North Palm Beach’s October 31 — and we know how to keep grass healthy during the off-season using the alternatives above.
We’ll tailor a summer lawn care plan that’s fully compliant and effective — potassium and micronutrient applications, pest and weed control, mowing, and maintenance.
Call or text us at 561-941-GROW — our friendly lawn experts are ready to answer questions and schedule a service. Tell us your address and we’ll tell you exactly which rules apply to your property. Come fall, your lawn will be primed and ready to flourish when regular fertilizing resumes.
Let’s keep your lawn healthy and our waterways clean.
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Floridist installs sod and treats lawns across Palm Beach County. Get a free quote in about 30 seconds, or call or text 561-941-GROW.