Typhula Blight

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Typhula blight symptoms
Typhula incarnata sclerotia


  • Pathogen: Typhula incarnata Lasch ex. Fr., Typhula ishikariensis Imai


  • Common Names: Typhula Blight, Gray Snow Mold


  • Climatic Zone: Temperate


  • Geographic Distribution:North America (temperate), Europe


  • Favorable Conditions: Temperatures between 30 F (-1 C) and 55 F (13 C) under snow cover and unfrozen soil


  • Hosts: Kentucky bluegrass, Poa annua, perennial ryegrass, creeping bentgrass, velvet bentgrass


  • Symptoms: Upon snow melt a grayish white mycelium is present. Circular to large patches or blighted areas that are gray in color
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