Best Fertilizers for Zoysia Grass in Florida

Best Fertilizers for Zoysia Grass in Florida

Zoysia grass has become an increasingly popular choice for South Florida homeowners and landscape designers—and for good reason. Its dense, carpet-like texture, ability to tolerate heavy foot traffic, and fair drought resistance make it a top-tier option for those looking to upgrade their lawns. But like any turfgrass, Zoysia thrives when given the right nutrients at the right time. If you want your Zoysia grass to maintain healthy color, strong root systems, and resilience against pests and disease, choosing the best fertilizer is crucial.

If you’re in South Florida—including areas like Miami, Fort Lauderdale, and Palm Beach—you need to understand the specific needs of your turf and how local conditions like sandy soil and high heat influence your fertilizer choices.

Understanding Zoysia Grass in South Florida

Zoysia grasses, such as Emerald and Zenith varieties, are warm-season grasses that grow resiliently through South Florida’s tropical and subtropical climate. However, South Florida’s unique soil composition—often very sandy with low organic matter—means it doesn’t retain nutrients well, especially during the rainy season. That’s why a consistent fertilization routine using the right products matters more here than in other parts of the country.

So, what should you look for when choosing a fertilizer for your Zoysia lawn?

What to Look for in a Fertilizer

Zoysia grass typically requires a balanced blend of nitrogen (N), phosphorus (P), and potassium (K) to promote blade growth, root health, and drought tolerance. However, in Florida, phosphorus content in fertilizers is regulated to protect local waterways, so most fertilizers for residential use feature either low or zero phosphorus levels.

Choose a fertilizer that features:

– Slow-release nitrogen: Encourages steady growth without burning the grass.
– Added micronutrients like magnesium, iron, and manganese: These improve color and resist disease.
– Low phosphorus content (unless a soil test shows deficiency).
– A balance of potassium to improve resilience against drought and foot traffic.

Top Fertilizer Options for Zoysia

1. Lesco 24-0-11 St. Augustine Lawn Fertilizer
Though marketed for St. Augustine, this mix also works excellently for Zoysia. The 24% nitrogen offers the vigorous growth Zoysia needs through the growing season. With a slow-release formulation and zero phosphorus, this is compliant with Florida guidelines and won’t leach into waterways.

2. Scotts Turf Builder Southern Lawn Food
Specially formulated for Southern lawns, including Zoysia, this high-nitrogen fertilizer strengthens roots and wards off heat and drought stress. Be mindful of timing—apply it during late spring and early summer for best results.

3. Milorganite Organic Nitrogen Fertilizer
For those who prefer a more environmentally friendly route, Milorganite offers a slow-release organic formula. It won’t burn your grass, enriches your soil with organic matter, and contains iron for rich, green color even in the hottest months.

4. Pennington UltraGreen Lawn Fertilizer 30-0-4
This high-performing fertilizer offers a strong boost of nitrogen and additional iron, ideal for South Florida’s sandy soils. It’s a great choice during the peak growing season when Zoysia needs a hearty feeding.

When and How to Fertilize Zoysia in Florida

Timing is everything when it comes to fertilizing Zoysia grass. In South Florida, the growing season typically runs from March through October. Here’s a general guideline:

– Early Spring (March–April): Apply a nitrogen-rich fertilizer once the grass breaks dormancy and begins to green.
– Late Spring/Early Summer (May–June): Feed again to promote strong growth heading into rainy season.
– Mid-Summer (July–August): Use a lighter feed or wait, especially during peak heat.
– Early Fall (September–October): Apply a final round using a fertilizer with higher potassium to strengthen roots before winter.

Always water your lawn after applying fertilizer, unless your product instructions say otherwise. Watering helps the nutrients penetrate deeper into the root zone and reduces risk of burning.

Avoid fertilizing during droughts or right before heavy rains. Excess water can wash fertilizer into nearby storm drains, leading to nutrient runoff and environmental harm.

Florida’s Environmental Fertilizer Rules

In South Florida, especially in counties like Broward, Palm Beach, and Miami-Dade, fertilizer ordinances may prohibit application during the rainy season (typically mid-June through September). Always check local guidelines or consult a professional landscaping service to avoid fines and protect the environment.

The Role of Soil Testing

Before applying any fertilizer, consider having your lawn soil tested. Florida’s sandy soil may lack organic matter and certain nutrients, such as magnesium or iron, without showing visible signs in your grass until it’s too late. A soil test can help determine what your specific lawn needs—and what it doesn’t. That way, you’re not wasting money or accidentally overloading your turf with one element while starving it of another.

Let Horseman’s Landscaping Take the Guesswork Out

If you’re not sure which fertilizer is right for your Zoysia grass—or if you don’t want the hassle of multiple applications throughout the year—Horseman’s Landscaping is here to help.

We offer full-service lawn care and turf management throughout South Florida, tailored specifically to the regional climate and soil conditions. Our team knows how to handle the unique needs of Zoysia grass—from selecting the right blend of fertilizer to optimizing watering and mowing schedules. Whether you’re maintaining an existing yard or planning a full landscape renovation, we can help you keep your grass looking lush year-round.

Want deeper insight into how professional lawn care can elevate your property? Visit our Fertilization & Maintenance Services page at Horseman’s Fertilization Maintenance Services.

More Than Just Lawn Care

At Horseman’s Landscaping, we don’t just fertilize—we transform outdoor spaces. We offer expert paver installations, outdoor lighting, hardscaping, and custom landscape designs that turn your yard into a resort-like retreat. We understand how every element—whether it’s healthy turf or beautifully laid pavers—plays a role in increasing the longevity and value of your home.

Explore our full range of services at horsemanslandscape.com and see the difference real, localized experience makes in South Florida landscaping.

Contact us today for a free consultation and learn how we can help your Zoysia lawn thrive—from the soil up.