Identification
Symptoms
- Light-green spots enlarge into 1-3 ft patches
- Reddish-brown to bronze turf fades to straw
- Frog-eye ring patterns can appear as turf recolonizes centers
- Season
- Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
- Regions
- Northeast, Midwest, Mountain West, Pacific Northwest, Transition Zone
- Turf Hosts
- Kentucky Bluegrass, Fine Fescue
Go deeper on Necrotic Ring Spot
Create a free EvapIQ account to see full scouting notes, management notes, and reference photos for Necrotic Ring Spot - and every other disease in this library.
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.