Prevention

• It is best to prevent lawn blight to avoid treatment by watering the lawn properly, keeping the lawn mowed to the appropriate height. Proper drainage after a heavy rain is needed to prevent lawn blight. This disease can be spread by a lawn mower that mowed infected grass previously. If a gardening service is hired it is important to discuss their disease prevention methods. To prevent lawn blight it is also important to remove excess thatch. Thatch should be reduced by ½ inches a year by aerate twice a year. To help prevent lawn blight when seeding bluegrass it is best to add 20 percent perennial ryegrass. The appropriate fertilization is required to prevent lawn blight.
  
  

Treatment

• The best way to treat lawn blight is to apply fungicides on the damaged area. This method of treatment should be applied in the spring to yield the best results. Apply fungicides during this season just before or just after the symptoms appear. After repeated used your lawn may become resistance to fungicides. It is important to rotate through various types of fungicides to prevent resistance.
  
  There are three types of fungicides for lawn blight, contact fungicides, systemic fungicides or penetrant fungicides. When used on lawn blight contact fungicides will kill the spores that caused the disease. When systemic fungicides are applied to a lawn it affects the lawns circulation system and roots. Compared to contact, systemic fungicides has a longer residual life span. The affects that penetrant fungicides have on the lawn can be compared to the systemic treatment. Penetrant fungicides differ because they work to treat and prevent lawn blight by stopping the growth of pathogens.
  
  It is important to use the right fungicide for your lawn to yield the best results and to ensure that you are treating the cause of the disease. There are fungicides that are known to kill off organism and insects that are beneficial to a lawn. Lawn blight will typically starts in one spot of the lawn before spreading. To minimize any damage to your lawns ecosystem it is recommended when using fungicides to spot treat your lawn.