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Warm season turf has a difficult time in fall and spring making the transition from growing to dormant and back to actively growing again. We often see diseases in turf in spring and fall. Proper disease identification and control practices are important in managing turf disease. Here are some references that can help you with turf disease control.
Fairy Ring (Clamp fungi mushrooms and approximately 50 Genera species of fungi) Fairy ring is caused by many types of basidiomycetes most of which produce mushrooms after heavy rains usually during late summer or early fall. Fairy ring can enlarge and cause severe damage or death to turfgrass. All turfgrasses are susceptible.
There are many fungal leaf spot pathogens that affect a very wide range of host plants. One very common leaf spot on hydrangea is Cercospora leaf spot caused by the fungal pathogen, Cercospora hydrangeae.