Why Your Lawn Turns Brown in Summer—and How to Fix It Naturally

Written by: Vanessa Dawson

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Time to read 3 min

Summertime should mean vibrant green lawns and lush outdoor spaces—but for many gardeners, it’s the season of brown patches, dry grass, and disease-prone lawns. If you’ve ever wondered why your lawn struggles in the heat, you’re not alone—and luckily, there’s a natural way to restore your yard to its full, healthy glory.

Why Lawns Suffer in the Summer

During summer, lawns face two major threats: drought stress and fungal disease . Even if you're watering consistently, you may still see yellowing or browning, especially in shady or heavily used areas. That’s because heat and humidity create the perfect environment for turf diseases like:

  • Summer Patch

  • Brown Patch

  • Dollar Spot

  • Leaf Spot

Left untreated, these diseases can spread fast, weakening your lawn’s root system and making it harder to bounce back.

How to Spot Lawn Diseases

Look for these early warning signs:

  • Circular brown patches that keep expanding

  • Thinning grass, even when watered

  • A slimy, discolored appearance on individual blades

Many gardeners assume brown spots are just from heat or pet urine—but if it’s spreading or persistent, it’s likely fungal.

Brown patches on lawn
Patch in lawn
Brown grass blades

Natural Lawn Recovery: What Actually Works

The key to a resilient summer lawn is prevention and protection. That’s where a natural, organic fungicide comes in. Arber’s Fungicide for Lawn Ready to Spray offers a targeted, hose-attachable solution that makes it easy to:

  • Treat fungal diseases like brown patch

  • Prevent future outbreaks with monthly maintenance

  • Protect turf without synthetic chemicals

Just spray it over the entire lawn once a month, preferably in the early morning or evening. The formula penetrates the root zone and leaf surface, delivering long-term protection that works with your lawn—not against it.

Summer Lawn Care Routine

Creating a green, thriving lawn without synthetic chemicals is possible—and it starts with proactive care and organic protection . Here’s a summer lawn routine we're digging:

  1. Spray monthly with an organic fungicide. Arber’s Fungicide for Lawn Ready to Spray attaches to your hose and makes lawn application simple. It helps control common fungal diseases before they spread.

    2. Mow high and less often. Taller grass shades the soil, retains moisture, and encourages deeper root systems—making it more drought- and disease-resistant.

    3. Water deeply, not daily. Deep watering trains roots to grow down instead of staying near the surface, where they dry out quickly.

    5. Avoid over-fertilizing. Too much nitrogen in summer can stress your lawn and promote disease. If you feed, choose an organic, slow-release option, like Arber's All Purpose Fertilizer.

    6. Let your lawn rest. Avoid unnecessary foot traffic and mowing during heatwaves. Stress weakens grass and makes it more susceptible to fungal issues.

"I have been getting brown patch on my lawn every summer... it started again this year and I applied the Fungicide for Lawn and my lawn seems to have greened up fast! Highly recommend!"

— Lisa D., MD

Arber’s Fungicide for Lawn Ready to Spray is a safe, effective way to treat and prevent disease—without harsh chemicals. You’ll be rewarded with a lush, green lawn that thrives all summer long.


A brown lawn isn’t a sign of failure—your grass just needs support. By switching to a more organic, preventative approach, you’ll set your lawn up for long-term health.

Quick Tips from Arber's Founder

FAQs

What lawn diseases will Organic Fungicide for Grass, Trees & Shrubs control or prevent?

As a lawn fungus treatment, this product will control lawn diseases including Anthracnose, Brown Patch, Dollar Spot, Fusarium, Gray Leafspot, Powdery Mildew, Blight, Rust, Summer Patch, and more.

How much Organic Fungicide for Grass, Trees & Shrubs should be applied for best results?

After determining the treatment area, we recommend applying the entire 16 oz bottle for up to 12,000 sq. ft. Treatment should take about five to six minutes to empty the solution over the treatment area. 

How does Organic Fungicide for Grass, Trees & Shrubs work?

This powerful fungicide contains beneficial bacteria that works by creating a protective shield over the surface of plants when applied. The beneficial bacteria significantly improves soil health, promotes plant growth, and protects plants against diseases and stresses, leading to higher crop yields and better overall plant health.