Milorganite

Common Lawn Diseases


Quick Tips:

1. Disease development is dependent on three factors:
  1. 1. Sucseptible plant
  2. 2. Favorable environment
  3. 3. The presence of a pathogen

2.
3.

Ever wonder what’s going on with that patch of dead grass on your lawn? Is it a disease; is it insect or pest damage?


Below are images and descriptions of some of the most common lawn diseases, including the management tools you’ll need to get your lawn back on track. A disease will not occur unless three factors are present simultaneously over a certain period of time. The three disease development factors are:
        1) Susceptible plant 
        2) Favorable environment 
        3) Pathogen

The first step is to identify if you have cool or warm season grass. If you need additional assistance determining your grass type please visit our cool and warm grass pages.

Cool Season (Northern) Grass Diseases

Brown Patch Dog Spot Dollar Spot Fairy Ring
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Gray Leaf Spot Red Thread Rust  
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Warm Season (Southern) Grass Diseases

Brown Patch Dog Spot Dollar Spot Fairy Ring
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Gray Leaf Spot Slime Mold Pythium Rust
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