If you’re noticing pink or reddish patches across your lawn, you’re likely dealing with Red Thread, a turf disease that often shows up in the spring or fall. Many assume it’s just a sign of low nitrogen, but here’s the reality: Red Thread is a fungal disease with multiple underlying causes, and simply applying fertilizer won’t solve it.

What Causes Red Thread?

Red Thread is caused by the fungus Laetisaria fuciformis, which thrives in cool, moist conditions—especially during periods of high humidity and slow turf growth. While low nitrogen is one contributing factor, other overlooked issues can also make your lawn more vulnerable, including:

• Calcium deficiency – Calcium plays a crucial role in strengthening plant cell walls and overall disease resistance. Deficient levels can weaken turf, making it easier for fungal infections to take hold.
• Poor drainage or compacted soil – Excess moisture creates an ideal environment for fungal growth.
• Inconsistent mowing practices – Cutting the grass too short or allowing clippings to pile up can stress the lawn and trap moisture.
• Thatch buildup – Excessive thatch holds moisture and creates a breeding ground for disease.
• Imbalanced pH or poor soil biology – These can hinder nutrient uptake and weaken turf resilience.

Don’t Just Fertilize—Fungus Needs a Targeted Solution

While balanced nutrition is part of the puzzle, it won’t eliminate the pathogen. That’s where MissionGreen’s Fungicide Program comes in.

How MissionGreen Tackles Red Thread and More

Our comprehensive program is designed to do more than just “green up” your grass. It protects your lawn at the microbial level to disrupt disease cycles and build turf that resists future outbreaks.

What our program includes:

• Targeted fungicide applications based on weather patterns and turf conditions
• Soil testing to detect calcium, nitrogen, and other nutrient imbalances
• Customized treatment plans for ongoing prevention of Red Thread, Brown Patch, Dollar Spot, and more
• Aeration and soil health support to reduce thatch and improve drainage

Why MissionGreen?

With MissionGreen, you get more than a lawn care service—you get a diagnostic partner. We don’t guess. We analyze, treat, and protect, helping your lawn recover and thrive with a long-term health strategy.

Red Thread doesn’t have to be a recurring headache. With MissionGreen, your lawn gets expert care from the roots up.

Contact us today to schedule your lawn evaluation and see how our Fungicide Program can restore your turf’s health—naturally and effectively. For additional lawn care topics, please visit our blog Living Green!