Defeating Microdochium Patch on Canadian Lawns

As the seasons change, Canadian homeowners and landscape enthusiasts often encounter a common lawn disease known as Microdochium Patch. This pesky fungus, also referred to as fusarium patch or pink snow mould, can wreak havoc on lawns, especially during the wet and cool months of spring. 

Understanding Microdochium Patch:

Microdochium Patch appears as small circular dead spots on lawns, with a distinct pinkish hue and fluffy white mycelia visible in the early morning. This fungus tends to thrive in wet and cool conditions, making early detection crucial for effective control. As one of the first diseases to emerge in spring, it can be tough to manage in a cold and wet climate.

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Symptoms of Microdochium Patch:

  • Circular dead spots on the lawn with a pinkish coloration.
  • Presence of fluffy white mycelia in the early morning.
  • Higher incidence in shaded or poorly drained areas
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Preventive Measures:

Prevention is key to managing Microdochium Patch effectively. Consider the following tips to keep your lawn healthy and fungus-free:

Early Preventive Application: 

Apply a preventive fungicide like Dedicate Stressgard in the fall before permanent snow cover to provide winterlong protection against snow mould diseases.

Monitor Weather Conditions: 

Be mindful of wet and cool weather patterns, especially during spring, which can lead to an outbreak of the disease.

Improve Lawn Drainage: 

Enhance the drainage in your lawn to reduce the accumulation of excess moisture, creating an unfavorable environment for the fungus.

Reduce Thatch: 

Regularly dethatch your lawn to minimize areas where the fungus can thrive.

Tips for Overall Lawn Care:

Maintaining a healthy lawn is essential for disease prevention and overall curb appeal. Here are some additional tips:

  • Set the mower at the appropriate height for your grass type and avoid cutting more than one-third of the grass height at a time.
  • Consider aerating your lawn to improve soil compaction and allow better nutrient and water absorption.
  • Apply balanced fertilizers as needed to ensure your lawn receives essential nutrients for growth and resilience.
  • Water your lawn deeply but infrequently, preferably in the morning, to prevent excess moisture that can lead to fungal growth.

Dedicate Stressgard by Envu:

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Dedicate Stressgard is a powerful fungicide designed exclusively for the Canadian landscaping market. It provides winterlong protection against snow mould diseases and effectively controls Microdochium Patch, brown patch, leaf spot, summer patch, dollar spot, and anthracnose. With its stressgard technology, it ensures excellent colour retention in the fall and maintains outstanding turfgrass quality in the spring.


Understanding the threat of Microdochium Patches and implementing proactive measures for prevention and overall lawn care is essential for maintaining a healthy and beautiful lawn. By following the tips mentioned in this article, Canadian homeowners and landscape enthusiasts can protect their lawns and enjoy a fungus-free outdoor space. 

For additional protection, consider Dedicate Stressgard by Envu, a reliable solution for disease management, and continue supporting companies like Envu, dedicated to promoting healthy environments for all.

(Disclaimer: The information in this article is for educational purposes only. Always consult with lawn care professionals for tailored advice and follow product label instructions for safe and effective use.)

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