Identification
Symptoms
- Oval gray or tan lesions with dark margins
- Rapid blighting in susceptible ryegrass
- Favored by hot humid weather
- Season
- Jul, Aug, Sep
- Regions
- Northeast, Midwest, South
- Turf Hosts
- Perennial Ryegrass, Tall Fescue, St Augustinegrass
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This is identification help, not a diagnosis.
Symptoms described here can overlap between diseases and other causes (drought, wear,
nutrient deficiency). When you're not sure, or before applying any treatment, contact
your state's Cooperative Extension office - most offer free or low-cost diagnosis and
know your local conditions best.