There are a wide variety of fungal pathogens present in the soil. When conditions exist for development, the fungal spores will grow and cause damage to turf or plants. Some fungi are more suited for cooler weather while others flourish during warmer months. Over watering is usually the key ingredient that aids in their development. Fungicides are applied to control the growth of spores, reducing damage and allowing the turf or plant to return to normal appearance. Multiple applications may be required. We recommend a licensed grass chemical care service for these applications as there are many seasonal restrictions and guidelines.