It’s called Brown Patch disease when it infects cool-season lawns, and it’s called Large Patch disease in warm-season lawns but both diseases are caused by the pathogen Rhizoctonia Solani.Here is a video I made this weekend showing its effects on St Augustine and Zoysia: The times it shows up are during seasonal transitions. In south Florida, it’s coming out of winter into spring, or like now, fall into winter.Here in my St Augustine and Zoysia, we were in the 80s with mild humidity and in the last 2 weeks have fallen into the upper 60s, no wind and no humidity. Rhizoctonia thrives when outside temps are in the low-70s consistently overnight - night time is also when dew forms on the ground keeping things wet.How many of you remember when we talked earlier this year about the disease triangle? Our Treatment strategy utilizes products found at any local big box store. I am using a twist on my “bullet-proof” strategy...
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