Dollar Spot

Sclerotinia homeocarpa

Symptoms
Round bleached-out to tan-coloured spots ranging from the size of a quarter to a silver dollar. Spots appear sunken. Yellow to light-green lesions may appear. In the morning, spots appear greyish-white from mycelium.  

Turfgrass Affected
All cool season turfgrass

Occurrence
Late spring to early winter when temperatures range from 16C to 31C (60F - 90F)

Control Options
- Remove guttation water (dew)
- Minimize thatch buildup
- Avoid late afternoon watering
- Increase air circulation across turf
- Maintain adequate levels of nitrogen and potassium

Dollar Spot Solution Sheet

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