Brown Patch is primarily found in fescue lawns. However, it can also affect Zoysia and Bermuda. This disease thrives in high humidity and temperatures ranging from over 80 °F during the day and over 60 °F at night. Incorrect turf height can also contribute to the development of this lawn disease.  When found in warm season turf, it is commonly referred to as Large Patch or Zoysia Patch.