Yellow Tuft / Downy Mildew

Also known as: Downy mildew

Pathogen: Sclerophthora macrospora

Identification

Symptoms

Bright yellow tufted spots on putting surfaces
Shallow-rooted tufted plants pull out easily
Downy white sporangia may be visible under morning dew

Season: Mar, Apr, May, Sep, Oct, Nov
Regions: All Regions
Turf Hosts: Bentgrass, Annual Bluegrass, Kentucky Bluegrass

Go deeper on Yellow Tuft / Downy Mildew

Create a free EvapIQ account to see full scouting notes, management notes for Yellow Tuft / Downy Mildew - and every other disease in this library.

Create Free Account Already have an account? Log in

Sources

NC State Extension - Yellow Tuft in Turf
Wisconsin Turfgrass Diagnostic Lab - Yellow Tuft / Downy Mildew

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.