The patches are roughly circular, crescent-shaped, or have serpentine patterns.

Whereas younger patches vary in diameter and in the number of dead tillers, older patches often appear as one- to two-foot rings of dead grass around tufts of apparently healthy grass. This effect is sometimes referred to as the "frog-eye" pattern. The dead grass is straw-colored and matted, giving the affected turf a pockmarked appearance.

Plants with crown and root rot are stunted, and infected crowns and roots appear dark brown in contrast to the white color of healthy crowns and roots.

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