Best Fertilizer for Oklahoma Lawns: Seasonal Tips for a Healthier Lawn

Looking for the best fertilizer for Oklahoma lawns? Whether you're growing Bermuda, Fescue, or Zoysia grass, using the right fertilizer at the right time of year is key to achieving that lush, green yard you’re after. In this complete guide, we’ll explain what nutrients your lawn needs, when to apply fertilizer in Oklahoma, and which products work best in our local climate.

Know What Your Lawn Needs First: Soil Testing

Before applying any fertilizer, the most important step is to test your soil. Every lawn in Oklahoma has different nutrient needs based on grass type, soil condition, and past care.

What to look for in your soil test:

• Nitrogen (N): Drives green, leafy growth
• Phosphorus (P): Encourages strong root development
• Potassium (K): Improves overall lawn resilience

You can order a soil test kit through the Oklahoma State University Extension:
OSU Soil Testing Services

Pro Tip: Fertilizing without a soil test is like medicating without a diagnosis. Know what your lawn actually needs before feeding it!

Best Fertilizer Types for Oklahoma Grass

Different grass types require different fertilizer blends. Here's a breakdown of the best options for Oklahoma’s most common turf types:

Bermuda Grass (Warm-Season)

• Ideal Fertilizer: High-nitrogen (e.g., 29-0-4 or 32-0-10)
• When to Fertilize: April through August (every 6–8 weeks)
• Top Pick: Scotts Turf Builder Southern Lawn Food

Need help with your warm-season lawn? Schedule a free consultation with Sooner Green Lawn Care →

Tall Fescue (Cool-Season)

• Ideal Fertilizer: Balanced blend (e.g., 20-10-10)
• When to Fertilize: Early spring (Feb–Mar) and fall (Sep–Oct)
• Top Pick: Milorganite Organic Nitrogen Fertilizer

Zoysia Grass

• Ideal Fertilizer: Slow-release nitrogen (e.g., 16-4-8)
• When to Fertilize: Late spring to early fall
• Top Pick: The Andersons PGF Complete 16-4-8

Seasonal Lawn Fertilization Schedule for Oklahoma

Timing matters just as much as the type of fertilizer. Use this season-by-season guide to keep your lawn thriving all year long:

Season	Fertilizer Type	Application Tips
Spring	Starter or balanced	Start fertilizing when grass greens up (March–April)
Summer	Nitrogen-heavy	Apply every 6–8 weeks (Bermuda & Zoysia only)
Fall	Winterizer (high K)	Apply potassium-rich blend in October
Winter	None	Let your lawn rest and recover

More Seasonal Lawn Tips from OSU Extension →

Not sure what schedule is right for your grass type? Talk to a local lawn care expert →

Organic Fertilizer Options (Pet and Eco-Friendly)

If you prefer a more natural approach, these organic fertilizers offer safe, effective results for Oklahoma lawns:

• Milorganite – Slow-release, non-burning nitrogen
• Espoma Lawn Food – Includes beneficial soil microbes
• Compost or Manure – Improves soil health long-term

EPA Guide: Safe Lawn Care Practices

Bonus: Organic fertilizers improve soil structure and reduce long-term chemical dependency.

Common Fertilizer Mistakes to Avoid

Avoid these common errors that could cost you time, money, and a healthy lawn:

• Over-fertilizing – Can cause thatch and water runoff
• Applying before rain – Nutrients wash away
• Wrong timing or formula – Can burn or weaken grass

Need a pro to take the guesswork out of it? Get a fertilization quote from Sooner Green →

Let Sooner Green Handle It For You

Choosing the best fertilizer for your Oklahoma lawn doesn’t have to be confusing. Our experts at Sooner Green Lawn Care customize fertilization programs for local soil and turf types. Whether you're into organics or prefer synthetic solutions, we've got a plan that fits your lawn and your schedule.

Request Your Free Lawn Fertilization Estimate Today →
Serving Oklahoma City, Edmond, Norman, Moore & Surrounding Areas

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