Fall is synonymous with large patch on zoysia - TurfNet.com
This is a great article on exactly what we face each year with zoysia patch. We recently treated the "hot spots" where zoysia patch has shown up in the past. It is a given that we will face other new patches in the spring and that some of the "hot spots" we treated might flare up despite our efforts. The excessively wet fall has me worried that next spring could be ugly with regards to this disease. We'll cross our fingers.