What is Grey Leaf Spot? – A Fungus
What does it look like?
The Quick Solution
If you see Grey Leaf Spot in your lawn it is best to treat straight away to avoid/limit the spread. It is advisable to rake/remove any dead leaves and debris which will be decreasing the sunlight and holding more water and moisture.
Apply Mancozeb Fungicide or Chlortan720 Fungicide – Spray to fix the problem. In 7-10 Days you should see a dramatic improvement.