Palm Beach County’s Summer Fertilizer Ban

No Nitrogen or Phosphorus 6/1 – 10/31

If you’re a Palm Beach County homeowner, you’ve probably heard about the summer fertilizer ban targeting nitrogen and phosphorus. Don’t worry — keeping your lawn healthy through the blackout is absolutely doable, and the rules are more straightforward than they look.

In this guide we’ll cover when the ban starts and ends, why it exists (hint: rainy season and our waterways), the real exceptions (including a couple that get misreported online), a city-by-city table so you know exactly what applies where you live, and smart, compliant alternatives for keeping your grass green. Let’s dig in.

When Does the Fertilizer Ban Begin and How Long Does It Last?

Mark your calendars for June 1. That’s the official start of Palm Beach County’s rainy-season fertilizer blackout.

From June 1 through October 31, it’s against the rules to apply any lawn or landscape fertilizer containing nitrogen (N) or phosphorus (P) on your grass in unincorporated Palm Beach County and most municipalities. This five-month window covers Florida’s entire rainy season, when afternoon thunderstorms can wash fertilizer right off your yard before it can do any good.

Come November 1, you’re free to resume normal fertilizing schedules.

Heads up if you live in the Town of Palm Beach: the Town runs a slightly shorter, stricter blackout — June 1 through September 30. The Town also doesn’t recognize the same new-sod establishment carve-outs that some other county municipalities do. We’ll cover the city-by-city differences in the table below.

Why these specific dates? June through October is when South Florida sees the heaviest rainfall and tropical storms. Fertilizer applied during this stretch is very likely to wash off before it can soak in.

Many Florida communities have similar summer fertilizer bans. Broward County runs June–September; Miami-Dade starts mid-May. Palm Beach County extended its ordinance through October 31 to cover late-season rains.

Bottom line: no nitrogen or phosphorus fertilizers all summer long, starting June 1 every year — but the end date depends on which Palm Beach County jurisdiction you live in. The next section breaks that down.

Palm Beach County Fertilizer Rules: City-by-City Differences

Palm Beach County’s ordinance is the baseline, but every city and village adopted and codified it slightly differently. The two questions that trip up homeowners (and even some lawn companies) most often are when exactly the blackout ends and what the rules really are for new sod. Let’s clear both up.

The Biggest Difference: Two Date Groups

Palm Beach County jurisdictions split into two camps when it comes to the blackout end date.

Group A: June 1 – October 31 Blackout. These jurisdictions prohibit any fertilizer containing nitrogen or phosphorus from June 1 through October 31. Examples include:

• Unincorporated Palm Beach County
• North Palm Beach
• Palm Beach Gardens
• Boynton Beach

This is the ordinance most lawn companies think of when they talk about the “Palm Beach County fertilizer ban.”

Group B: June 1 – September 30 Blackout. These jurisdictions follow the original UF/IFAS model ordinance more closely, ending the blackout a month earlier. Examples include:

• Boca Raton
• Delray Beach
• Jupiter
• Town of Palm Beach

If you live in a Group B jurisdiction, you can technically resume nitrogen and phosphorus fertilization on October 1, a full month before your Group A neighbors. Either way, June 1 is the start date everywhere in the county.

City-by-City Quick Reference Table

Here’s how the major Palm Beach County jurisdictions handle the blackout dates and the two most-asked-about new sod provisions. Click any jurisdiction to view its current ordinance.

Jurisdiction	Blackout Dates	N/P Fertilizer on New Sod (First 30 Days)?	60-Day New Sod Exception in Water Buffer Zone?	Source
Palm Beach County (unincorporated)	Jun 1 – Oct 31	No — prohibited	Yes — applies to the 10 ft fertilizer-free buffer only	Municode
North Palm Beach	Jun 1 – Oct 31	No — prohibited	Yes — buffer zone only	Village of NPB
Palm Beach Gardens	Jun 1 – Oct 31	No — prohibited	Yes — buffer zone only	Municode
Boynton Beach	Jun 1 – Oct 31	No — prohibited	Likely yes — same structure as county	City of Boynton Beach (PDF)
Wellington	Jun 1 – Oct 31	No — prohibited	Yes — buffer zone only	Village of Wellington
Lake Worth / Lake Worth Beach	Jun 1 – Oct 31	No — prohibited	Yes — buffer zone only	City of Lake Worth (PDF)
West Palm Beach	Jun 1 – Oct 31	No — prohibited (30-day rule confirmed)	60-day buffer language not confirmed	Municode
Greenacres	Jun 1 – Oct 31	No — prohibited (30-day rule confirmed)	60-day buffer language not confirmed	Municode
Boca Raton	Jun 1 – Sep 30	No — prohibited	Yes — buffer zone only	City of Boca Raton
Delray Beach	Jun 1 – Sep 30	No — prohibited	Yes — buffer zone only (follows UF/IFAS model)	Municode
Jupiter	Jun 1 – Sep 30	No — prohibited	Yes — buffer zone only (follows UF/IFAS model)	Municode
Town of Palm Beach	Jun 1 – Sep 30	No — prohibited; no general new sod carve-out found	Not found in current code	Town of Palm Beach

The New Sod Confusion

This is where most applicators — even seasoned ones — get tripped up. Many Palm Beach County ordinances contain language similar to:

Fertilizer containing nitrogen and/or phosphorus shall not be applied before seeding or sodding and shall not be applied during the first 30 days after installation.

However, some Palm Beach County municipalities also include language allowing fertilization of newly planted turf within fertilizer-free buffer zones beginning 30 days after installation and extending for 60 days if necessary for establishment.

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.”

Depending on the municipality, all three statements can be partially true. Here’s how to untangle them:

• “No fertilizer for the first 30 days” — generally TRUE. No nitrogen or phosphorus fertilizer may be applied to new sod for the first 30 days after installation, across every PBC jurisdiction we’ve reviewed. This is independent of whether the summer blackout is in effect.
• “New sod gets a 60-day exemption” — PARTIALLY TRUE. The 60-day language exists in many PBC ordinances, but it applies specifically to new sod planted inside the 10-foot fertilizer-free buffer zone along water bodies. It allows fertilization 30 to 90 days after installation in those normally off-limits buffer strips so the sod can establish. It is not a general exemption from the summer N/P blackout.
• “You can fertilize new sod during the blackout” — MOSTLY FALSE for residential lawns. The narrow buffer-zone exception above is the only “yes” we’ve seen in PBC ordinances, and it applies only to a 10-foot strip along water. Outside that buffer, the summer blackout still applies regardless of whether your sod is newly installed. The Town of Palm Beach is the strictest case — no general new sod carve-out at all.

The practical takeaway for homeowners installing sod between June and October: plan for potassium, iron, and micronutrient-only feeding during the establishment window.

Save the full N-P-K fertilization for October 1 (Group B) or November 1 (Group A), whichever applies in your city. We cover ban-compliant products in the alternatives section below.

Why Was This Ban Put in Place?

This fertilizer ban isn’t here to make your life harder; it’s 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.

To prevent this, Palm Beach County restricts N and P fertilizer use during the rainy months to reduce runoff and algae growth.

Florida’s summer showers aren’t the only factor. Our waterways — Lake Worth Lagoon, the Loxahatchee, and nearby ocean reefs — are sensitive ecosystems. Pausing nitrogen and phosphorus fertilization in wet months gives them a chance to recover from nutrient pollution and avoid the worst of summer algal blooms.

Local governments across Florida adopted “Florida-Friendly Fertilizer” ordinances under state encouragement specifically because nutrient runoff was impairing waterways. Think of the ban as a community effort to keep beaches, fishing spots, and the Intracoastal clean.

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.

Waiting until the rainy season passes ensures the nutrients actually stay in your soil and nourish your lawn instead of polluting waterways. Win for your yard, win for the environment, win for your wallet.

What Are the Exceptions to the Fertilizer Ban?

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 and related requirements — but they’re narrower than many homeowners assume.

• New Lawns & Landscaping: Covered in detail in the New Sod Confusion section above. Short version: nitrogen and phosphorus fertilizer is prohibited on new sod for the first 30 days after installation, and the 60-day language in some ordinances is a narrow exception for sod planted inside the 10-foot fertilizer-free water buffer zone — not a general blackout carve-out. If you’re sodding during summer, plan to use potassium, iron, and micronutrient products only and wait until your jurisdiction’s end-of-blackout date for full N-P-K fertilization.
• Golf Courses, Parks, and Athletic Fields: Recreational turf like golf course greens, sports fields, and public parks are generally exempt from the summer ban, but only under special management. These facilities have trained staff following state-approved Best Management Practices to minimize runoff. Palm Beach County’s rules specify that the ban “shall not apply to sports turf at golf courses, parks, and athletic fields provided they adhere to strict fertilizer management plans.” In short, the pros can still fertilize fairways in summer because they’re doing it carefully under regulated guidelines. Home lawns don’t get the same leeway.
• Agricultural Areas & Vegetable Gardens: The focus of the ban is urban landscape fertilization, so commercial agriculture and nursery farms are generally exempt — they operate under different state nutrient management rules. Your personal vegetable garden typically isn’t the target either, since the ordinances focus on turfgrass and ornamental landscapes. Still, even in your veggie patch, it’s wise to avoid heavy fertilizing right before a forecast downpour.
• Phosphorus Deficiency Documented by a Soil Test: If a professional soil test shows your lawn is genuinely phosphorus-deficient, you may be allowed to apply phosphorus fertilizer despite the general restriction. PBC ordinances prohibit phosphorus fertilizer unless a soil test demonstrates a deficiency. Florida soils are naturally high in phosphorus in most cases, so this exception is rare — but real. Keep the test results on file in case code enforcement asks.
• Product Formulation Requirements (year-round): Outside the summer ban, Palm Beach County still regulates what fertilizer you can use. Any lawn fertilizer containing nitrogen that you apply the rest of the year must contain at least 50% slow-release nitrogen (often labeled “water-insoluble nitrogen” on the bag), so the nitrogen trickles out over time instead of releasing all at once. Check your fertilizer label in fall, winter, and spring. Also, no fertilizer of any kind may be applied within 10 feet of a water body (canals, lakes, the Intracoastal, etc.) — that buffer zone protects against direct runoff year-round.

The ban is fairly strict for the average homeowner, with reasonable allowances for specialized turf and documented soil deficiencies.

If you think you have a situation that might be exempt, check your city’s ordinance (use the table above) or contact the PBC extension office. When in doubt, err on the side of caution — the fines for violating the fertilizer ban can be significant, and nobody wants to accidentally pollute our waterways.

Summer Lawn Care Alternatives (Keeping Your Lawn Healthy Without N or P)

Just because you can’t use nitrogen or phosphorus for a few months doesn’t mean your lawn has to suffer. Grass can stay green and healthy all summer with a little extra care and some savvy product substitutes.

Here are the most effective ban-friendly alternatives:

• Potassium-Rich Fertilizers: Potassium (K) is still legal during the ban — and it’s great for your lawn’s health. Potassium (the third number in fertilizer ratios, N-P-K) doesn’t feed algae blooms and it strengthens turf at the cellular level. It improves root growth, drought tolerance, and disease resistance. Look for fertilizers labeled 0-0-XX, like a 0-0-20 or 0-0-16 analysis — zero N, zero P, plenty of K. Many garden centers stock summer blends specifically for the blackout period. A potassium application in summer gives your lawn a “K boost” that helps it fight heat, stress, and pests, and it won’t leach into water.
• Iron and Micronutrient Supplements: If your grass looks pale or yellow without its usual nitrogen feed, try an iron application. Iron doesn’t make grass grow faster, but it greens up the color by aiding chlorophyll production. Iron sulfate or chelated iron sprays deliver that deep green without violating the ban. You can also apply other micronutrients your lawn or landscape might need — magnesium and manganese (often needed by palms and citrus), or zinc and boron for ornamentals. Look for “minor nutrient” blends or individual additives like magnesium sulfate. Just verify any product is zero-N and zero-P. Tip: Many summer “green-up” lawn sprays combine iron with micronutrients — check your local garden store.
• Organic Soil Amendments (Sea Kelp, Compost, Humic Acids): One secret to thriving summer lawns is feeding the soil, not just the plant. Several organic products are ban-compliant and genuinely improve soil health. Seaweed and sea-kelp-based fertilizers deliver trace minerals and natural growth hormones that strengthen turf. Humic and fulvic acids (from naturally composted matter) improve nutrient uptake and soil structure — they aren’t fertilizers themselves, but they help roots access whatever nutrients are already present and enhance microbial activity. Compost or compost tea top-dressed lightly on the lawn introduces beneficial microbes and a tiny, slow trickle of nutrients well below the threshold the ordinance is targeting.
• “Sweet” Soil Boosters (Blackstrap Molasses): A trick some Florida lawn enthusiasts swear by — plain blackstrap molasses. Unsulfured molasses diluted with water and sprayed on lawn and garden acts as a natural soil booster. It’s rich in sugars and micronutrients like calcium, magnesium, and potassium, and the sugars feed the beneficial microbes in your soil — basically a probiotic for the lawn. Healthier soil biology means better breakdown of organic matter and improved nutrient availability for your grass. Mix about 2 ounces of unsulfured blackstrap molasses per gallon of water and spray on the lawn during the cooler part of the day. Inexpensive, ban-compliant, and your yard will smell faintly like cookies for an afternoon.
• Focus on Pest and Disease Control: Summer in Florida is peak season for lawn pests and fungi. A healthy, pest-free lawn handles nutrient limitations far better, so use the blackout months to get aggressive on pests and weeds. Watch for chinch bugs (which love St. Augustine grass in hot, dry stretches), and for sod webworms and armyworms (which often show up in late summer). If you see patches turning brown despite watering, inspect for pests or consider a preventative lawn insect treatment. Likewise, watch for fungal diseases like brown patch or dollar spot in humid, rainy weather. A lawn fungicide, better air circulation, and not watering at night all help. Use the summer to focus on the other aspects of lawn care: mow at the proper height, water correctly (less frequent deep waterings, never during a downpour), and stay on top of bugs and weeds.
• Mowing and Irrigation Tips: Raise your mower height a notch in summer — slightly taller grass develops deeper roots and tolerates stress better. Avoid mowing right after heavy rain to prevent tearing. Water in early morning, and only if it hasn’t rained — too much water (irrigation plus rain) drives fungus and leaches what nutrients you do have. Smarter mowing and watering reduce strain on your lawn so it stays green with minimal inputs.

By combining these alternatives with good practices, your lawn can stay lush all summer without a drop of nitrogen or phosphorus.

A lot of homeowners are surprised at how well grass does in the off-season — and many find that focusing on soil health and proper maintenance has long-term benefits year-round.

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 the rules vary city by city.

If you want to take the guesswork out of it, call in the pros. Floridist is here to help Palm Beach County homeowners navigate the fertilizer ban and still have an envy-worthy lawn.

Our team stays on top of every municipality’s ordinance (we serve the whole county, from the Town of Palm Beach’s shorter blackout to Wellington and beyond) and we know exactly how to keep grass healthy during the off-season using the alternatives described above.

We’ll tailor a summer lawn care plan that’s 100% compliant and effective — potassium and micronutrient applications, pest and weed control, mowing, and maintenance.

Don’t let the fertilizer blackout stress you out or turn your yard into a science experiment. Reach out to Floridist for professional summer lawn care. We’ll handle all the hot-weather challenges so you can enjoy your green grass, worry-free.

Call or text us at 561-941-GROW — our friendly lawn experts are ready to answer questions and schedule a service. With Floridist, you’ll have peace of mind knowing your lawn is in expert hands all summer, and come fall it’ll be primed and ready to flourish when regular fertilizing resumes.

Let’s keep your lawn healthy and our waterways clean. Happy summer, and here’s to a beautiful, ban-compliant lawn season!