When the Rhizoctonia fungus is found in warm season turf, it is commonly referred to as Large Patch or Zoysia Patch. Just like Brown Patch,  this lawn disease thrives in high humidity and temperatures ranging from over 80 °F during the day and over 60 °F at night.  Large patch is the most common disease found in Bermuda and Zoysia lawns.  This disease is most noticeable in the spring and fall when warm-season lawns are actively growing.