Prevention

• 1). Water your lawn with 1/2 inch of water at least twice a week, either before the sun comes up or after the sun goes down.
  
  
• 2). Mow your lawn at least once a week, but don't cut it shorter than 2 inches.
  
  
• 3). Clean your mower regularly in case it has come in contact with diseased grass, and if you use a lawn care service talk to your lawn technician about cleaning his mower blades before cutting your grass.
  
  
• 4). Improve drainage in your yard if your grass is covered in standing water after it rains.
  
  
• 5). Lawn thatch, or dead grass between the new growth and the soil, can be a breeding ground for diseases. Aerate your lawn at least twice a year and keep thatch to 1/2 inch.
  
  

Reatcionary Steps

• 1). Identify the disease that is affecting your lawn. You can use the chart listed as a reference below, or ask a lawn expert.
  
  
• 2). Purchase fungicide that treats the disease that is affecting your lawn.
  
  
• 3). Mix the fungicide according to the instructions and fill the sprayer with the fungicide.
  
  
• 4). Spray the affected area with fungicide and wait 24 hours before watering your lawn.
  
  
• 5). Repeat after a week if the fungicide does not seem to be working.