What is Dollar Spot?

During times of heavy dew and excessive rainfall, straw-colored spots 2'“-6” in diameter may begin to show in turfgrasses. The affected grass may begin to die and the affected area may spread to form larger, irregular spots throughout the yard. This is known as dollar spot.

Dollar spot is common Spring through the Fall. Leaf-blades will turn tan in color with a red-brown margin. In the early morning, a cobweb-like fungus may be seen across the infected grass.

Adequate fertilization will help the grass naturally overcome this disease. Turfgrasses that are deficient in nutrients are more prone to dollar spot and also recover from the damage more slowly than well-fertilized turf. Excessive thatch accumulations greatly encourage dollar spot activity. Regular aeration will help prevent excessive thatch build-up. In addition, proper irrigation timing and zoning is an important preventative measure. Dollar spot is encouraged by drought stress and leaf wetness. Proper irrigation timing is needed to balance these factors.