Patches of fuzzy white mold

slorettoJuly 20, 2010

Hello-This is my first post. I searched the site and couldn't find anything. Today I noticed circular patches ranging from 4 to 8 inches in diameter. The patches appear to have a fuzzy white mold encapsulating the grass blades. I wiped it off with my fingers and I could see the grass where the mold was is yellow and dead/dying. I took some pictures but don't know if I can upload them. Any help would be greatly appreciated, as I am a novice to lawn care. Thanks in advance!


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Sounds like you have a fungal disease. The fuzzy white stuff is called mycelium. The weather in CT has been perfect for fungal diseases this year, especially with the recent thunderstorms that has kept the grass wet for 24 hours. Mycelium isn't present in all fungal diseases, but one of the more common ones is pythium blight, also known as grease spot. This can be self limiting, or it can continue to spread. You can treat fungi with fungicides such as Immunox (Home Depot), Heritage, Eagle (Lesco) and others. Heritage is probably the best one, but if you don't have a Lesco nearby I would go to Home Depot and buy some Immunox and spot treat the areas where you see the mycelium as well as patches of dying grass.

    Bookmark   July 20, 2010 at 11:21AM
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Also there are some people that recommend using milk and baking soda as natural treatments for fungal outbreaks. I have never used either, and I am not knowledgable on how much to use, and how well they work. I am sure someone will add a post about these remedies.

    Bookmark   July 20, 2010 at 11:24AM
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I have this same problem, it's spreading really fast. Can i treat the healthy grass around it as well to prevent itfrom spreading? I also need to fertilize now, can I perform both treatments at the same time. Any help would be appreciated.

    Bookmark   August 21, 2011 at 9:15AM
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Yes, you can treat the healthy grass as well. Fungicides are actually more effective when applied before disease starts. Why do you need to fertilize now? Where are you located and what kind of grass do you have?

    Bookmark   August 21, 2011 at 9:27AM
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