# The Grass Is Dying in a Circle Spot on My Lawn
Lawns are susceptible to a number of disorders either caused by pathogens or poor cultural management. The North Dakota State University Extension cites fungi infection as the most frequent reason for lawn disease. A fungus also causes the appearance of dead circles in grass.
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Identification
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Spring dead spot in grass is caused by the Ophiospharella korrae or O. narmari fungi. The fungal growth is favored in temperatures of 50 to 57 degrees Fahrenheit. The pathogen colonizes grass during its dormant state. Symptoms are visible when grass comes out of dormancy.
Damage
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The disease is characterized by the appearance of 6- to 12-inch-diameter circles of dead grass on lawn. As the disease progresses, the circles get larger and merge together. Dark colored, dried fungal growth or sclerotia can be seen on grass roots. Affected roots and crown areas appear sunken.
Control
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Avoid fertilizing lawns during late summer. Irrigate grass according to product requirements and do not overwater. Avoid thatch buildup and remove all dead grass areas. Mow lawns at an increased height and overseed with ryegrass in fall. Chemical control options are not necessary.
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