Skip to content

When Should I Apply A Fungicide To My Lawn?

Serving Ocala | St Augustine | Gainesville | Palm Valley

Fungicides are essential for controlling and preventing lawn diseases. To get the best results, it’s important to select the right product and apply it at the proper time. Applying at the wrong time can reduce effectiveness. Here’s what you need to know about the different types of fungicides and when to use them.

A lawn with patches of visible fungus

When to Use Curative Fungicide Treatments

Curative fungicides are typically what people turn to when treating fungal issues. They work to eliminate any active fungus in your lawn, so use them only when you notice signs of a fungal problem, such as:

  • Brown Patches: Brown or yellow patches on your lawn are a common sign of fungal infection. These patches often appear in circular or irregular shapes.
  • Decaying Odor: Fungi can release a musty or unpleasant smell, particularly if they’re causing the grass to decay. If you detect a foul odor in your yard, it could be due to fungus.
  • Discoloration: Besides brown patches, you may notice yellowish, tan, or gray streaks across your lawn, which can indicate the presence of fungal infection.
  • Visible Fungal Growth: While fungi may not always be immediately visible, some types can appear as moldy, powdery, or slimy patches on your lawn.
  • Wilting Grass: Fungal infections can cause the grass to wilt and thin out, leading to a spongy or squishy texture in areas where the fungus is affecting the turf.

It’s important to note that some of these signs could be caused by other lawn health issues. Rather than jumping straight to curative fungicide, consider consulting a professional lawn care specialist.

Lawn care professionals can help diagnose the root causes of your lawn’s issues and suggest the right products tailored to your needs. They can also assist with proper application to ensure your lawn recovers fully and thrives.

When to Use Preventative Fungal Treatments

Preventative fungicides help create a hostile environment for fungi, preventing growth and disease. When applied to a healthy lawn, they act as a barrier against fungal issues, particularly when paired with natural methods such as controlling moisture. However, we suggest waiting to apply them if your lawn is:

  • Stressed
  • Dehydrated
  • Overly Damp
  • Dormant


If fungal growth is taking over your lawn and you’re unsure of the cause, contact Bug Out. Our experts can diagnose the issue and suggest the perfect product for your needs, while also helping with proper application to give your lawn the care it deserves.

Back to How to Avoid Fungus and Weeds in Your Lawn