Dollar Spot Treatment

Dollar Spot Information

Scientific Name: Sclerotinia homoeocarpa

Turfgrass host: Annual Bluegrass, Kentucky Bluegrass, creeping bentgrass, perennial ryegrass

Time of Year: May thru October

How To Identify Dollar Spot

Dollar spot is easily recognizable by the appearance of small bleached-out spots about the size of a quarter. Light tan bruises with dark brown to reddish brown borders are apparent on the leaf blades of Kentucky Bluegrass. White strands of fungal matter are often seen in the morning if your lawn is effected by dollar spot usually starts taking over lawns around June and continues until early September. High humidity and high temperatures combined with excessive watering can make a lawn more prevalent to dollar spot disease. If you water your lawn daily, be sure to never water at night. Watering at night does not allow your grass to dry out fast, which helps Dollar Spot grow.

 Dollar Spot Control

To prevent dollar spot, late spring fertilizer is important. This may not prevent dollar spot, but it will suppress it so it does not over take your lawn. We recommend applying Scotts Turf Builder Lawn Food in May. This fertilizer contains 32% Nitrogen and gives the lawns other nutrients it needs as well such as Potash. Use a Scotts Mini Broadcast Spreader, and set the rate to 3.75. Apply another nitrogen application 6-8 applications later around mid-June. 

Curative Fungicide for Dollar Spot

 Clearys 3336F Fungicide is a preventative and curative fungicide that will control a wide range of lawn diseases including Dollar Spot. This fungicide should be applied when dollar spot first appears in the lawn and applications should be continue in 14 day intervals until the dollar spot disease has disappeared.

Clearys 3336F should be applied at a rate of 2-4 fluid oz per 1000 square feet. If you do not have a sprayer, we recommend that you use a Chapin Pro Series Four Gallon Backpack Sprayer. When you are mixing and spraying fungicide on dollar spot, always wear chemical resistant gloves and chemical approved safety glasses.