Joe Magazzi, President of Gr.E.A.T Red Thread & Pink Patch – Plan your attack on these fungal diseases! by Joe Magazzi We have been receiving many questions about Red Thread and Pink Patch, which are fungal diseases that can occur in turf grass.  These diseases are usually easy to identify by patches of pink or red discoloration on turf grass. These diseases tend to appear and be most active when temperatures are around 70°F, but they can start to grow with lower temperatures.  These diseases also appear during periods of wet weather, such as we have experienced in the Northeast this Spring.  Due to a convergence of these warm and wet weather conditions, Red Thread and Pink Patch are thriving and very prevalent in turf grass.  Red Thread at Joe's house Red Thread and Pink Patch are generally aesthetic diseases that can be controlled both by adjusting your fertility and cultural practices. However, in severe cases, these diseases (especially R...