Why Spring Lawn Care in South Florida Is Different
If you moved to South Florida from somewhere up north, you probably figured lawn care here would be easy. No snow, no frost, just sunshine and green grass year-round. And yeah, that’s partly true. But spring lawn care in South Florida comes with its own set of challenges that catch a lot of homeowners off guard.
For starters, our “spring” doesn’t look like everyone else’s spring. While people in Ohio are waiting for the snow to melt, we’re already dealing with aggressive weed growth, chinch bug outbreaks, and the transition from dry season to wet season. The grass never really goes dormant here — it just slows down a bit in winter and then takes off like a rocket once March hits.
Whether you’re in Pompano Beach, Fort Lauderdale, or Deerfield Beach, the fundamentals are the same. Your lawn needs specific attention during March, April, and May to set it up for the brutal summer ahead. Skip these months and you’ll be fighting an uphill battle from June through September.
Here’s your month-by-month breakdown for spring lawn care south Florida style.
March: Wake-Up Time for Your South Florida Lawn
March is when everything starts moving again. Soil temperatures climb into the mid-70s, rainfall picks up slightly, and your grass starts growing faster than it has since last fall. This is your window to get ahead of problems before they snowball.
Mowing. If you’ve been mowing less frequently during the winter, it’s time to get back on a regular schedule. For St. Augustine grass — which is what most Pompano Beach and Broward County lawns are growing — set your mower to 3.5 to 4 inches. That sounds tall, but St. Augustine needs the height to shade its own root zone and outcompete weeds. Zoysia can go a bit lower, around 2 to 3 inches. Bermuda grass handles the lowest cut at 1 to 2 inches.
Don’t fall into the trap of scalping your lawn in March thinking it’ll green up faster. It won’t. You’ll just stress the grass and open the door for weeds to take over. Mow regularly — once a week is enough right now — and never cut more than one-third of the blade height at a time.
Fertilizing. March is your first fertilizer application of the year. Go with a slow-release nitrogen fertilizer, something like a 15-0-15 or 16-4-8 blend. The slow-release part matters because it feeds the grass over several weeks instead of dumping a bunch of nitrogen all at once (which just fuels a growth spike followed by a crash).
Broward County has fertilizer ordinances you need to follow. Many Broward County municipalities restrict nitrogen and phosphorus fertilizer application during the wet season, typically June through September. Specific dates and exemptions vary by municipality. Confirm the rules applicable to your property. March is well within the safe window, but it’s worth knowing the rules so you don’t get a fine later in the year.
Weed control. March is when weeds get aggressive. If you didn’t put down a pre-emergent back in February, you’re already behind, but it’s not too late to spot-treat. Dollarweed, clover, and crabgrass are the usual suspects in South Florida lawns. A post-emergent weed treatment works on existing weeds, but be careful with the product you choose — some products can damage St. Augustine grass.
Irrigation. Water restrictions in Broward County allow two days per week of lawn watering (odd addresses on Monday and Thursday, even addresses on Tuesday and Friday). Make sure your irrigation system is running early morning — between 4 AM and 8 AM — to minimize evaporation. Each zone should run long enough to put down about 3/4 inch of water per session.
Water restriction schedules are subject to change. Verify current restrictions with your local utility or at sfwmd.gov before irrigating.
March is also a good time to check your sprinkler heads. Look for broken heads, clogged nozzles, and coverage gaps. That dry brown patch in the corner of your yard? It’s probably a sprinkler head that’s pointed at the sidewalk instead of the grass.
April: The Growth Explosion
April is when South Florida lawns go from “waking up” to “full throttle.” Temperatures are consistently in the 80s, humidity is climbing, and afternoon rain showers start popping up (though we’re not in full wet season yet). Your grass is growing fast now, and it needs to be managed.
Mowing frequency. You might need to bump up to twice a week by late April, especially for Bermuda and St. Augustine lawns in sunny spots. If you’re seeing the grass grow tall enough between weekly mowings that you’re cutting more than a third off each time, increase your schedule. Keep the blade sharp — a dull mower blade tears the grass instead of cutting it cleanly, leaving brown tips and making the lawn vulnerable to disease.
Pest watch. Chinch bugs are the number one lawn pest in South Florida, and April is when they start showing up. Look for irregular brown patches in sunny areas, especially along driveways, sidewalks, and curbs where the grass gets the most heat stress. Pull back the grass at the edge of a brown patch and look for small black-and-white insects scurrying around. If you find them, treat quickly — chinch bugs can destroy an entire lawn in a few weeks if left unchecked.
Sod webworms are another April pest to watch for. They create small brown patches and you’ll notice tiny moths fluttering above the grass at dusk. A lawn insecticide labeled for sod webworms takes care of them.
Soil testing. If you haven’t tested your soil recently, April is a great time. Your local UF/IFAS extension office in Broward County offers affordable soil testing. The results will tell you exactly what nutrients your soil needs (and doesn’t need), so you’re not guessing with your fertilizer applications. Most South Florida soils are alkaline and low in iron, which is why you’ll often see yellowing leaves even when the lawn is otherwise healthy.
If your test shows iron deficiency, apply a chelated iron supplement. It’ll green up the lawn within a few days without adding excess nitrogen. Homeowners in Deerfield Beach and Pompano Beach deal with this constantly because of the limestone bedrock under our soil.
May: Prepping for the Summer Grind
By May, wet season is arriving. Afternoon thunderstorms become almost daily, humidity is oppressive, and fungal diseases love every minute of it. Your spring lawn care south Florida routine shifts from growth management to disease prevention.
Fungus prevention. Gray leaf spot and brown patch are the two biggest fungal threats to South Florida lawns in late spring. Gray leaf spot shows up as small brown lesions on the grass blades, usually after heavy rain. Brown patch creates circular dead spots that spread outward. Both thrive in warm, humid conditions with poor air circulation.
Prevention is easier than treatment. Water in the morning (never at night), improve drainage in low spots, don’t over-fertilize with nitrogen (which makes the grass grow soft and susceptible), and keep the lawn at the proper mowing height. If you see early signs of fungus, a fungicide application can stop it from spreading. But fix the underlying conditions too, or it’ll come right back.
Irrigation adjustments. With rain increasing, you’ll need to dial back your irrigation. An easy rule: if it rained more than half an inch in a day, skip your next scheduled watering. Overwatering is just as damaging as underwatering in South Florida. It creates shallow root systems, promotes fungal growth, and wastes water.
Install a rain sensor on your irrigation system if you don’t have one already. It’s actually required by Florida law, and it’ll automatically skip watering cycles when there’s been enough rain. A rain sensor can typically pay for itself through reduced irrigation water usage, though savings vary depending on your irrigation schedule and local water rates.
Requirements may vary by system age and local ordinance. Consult your irrigation contractor for details applicable to your system.
Last fertilizer push. Get your second fertilizer application in by mid-May, before the June 1st blackout period kicks in. Use the same slow-release formula from March. This gives the lawn a final nutrient boost to carry it through the summer months when you can’t fertilize.
Aeration. If your lawn feels spongy or water pools on the surface instead of soaking in, it might be time to aerate. Core aeration pulls small plugs of soil out of the ground, allowing water, air, and nutrients to reach the root zone. May is a fine time to do this in South Florida — the grass is growing actively enough to recover quickly from the disruption.
The Bottom Line on Spring Lawn Care in South Florida
Spring is the foundation for everything your lawn does the rest of the year. Get March through May right, and your grass goes into summer strong, thick, and ready to handle the heat, the rain, and the bugs. Skip these months, and you’re playing catch-up all year.
The key is consistency. Regular mowing at the right height, fertilizing at the right times, watching for pests before they get out of control, and adjusting your irrigation as the weather changes. It’s not complicated — it just takes attention.
If you’d rather hand this off to someone who does it every day, EPR Landscaping handles lawn maintenance for homes across Pompano Beach, Fort Lauderdale, Deerfield Beach, and the rest of Broward County. We know these grasses, this soil, and this climate. Your lawn’s in good hands.
