Brown patch is most prevalent on bermudagrass which has been heavily fertilized when night temperatures are above 68 degrees and day temperature are above 80 degrees. Zoysiagrass is NOT RECOMMENDED IN COOL SEASON AREAS. Do yourself and your neighbors a favor and do not plant this grass where cool season grasses dominate. Zoysia grass originated in the orient and was brought here in the 1800’s. It is a highly versatile and beautiful grass that can be used on everything from sports. What Causes Zoysia Grass to Turn Yellow?. Zoysia grasses are native to Asia. One variety, introduced to the United States from Manila, Philippines, was commonly. Different Types of Zoysia Grass. Zoysia grasses are warm weather grasses native to East and Southeast Asia. Zoysia spreads horizontally by stems both above and below. You have brown patches of dead grass in your lawn. Is it the common lawn disease ‘brown patch’ or is it something else? The answer is important: if it is brown. Spotting Brown Patch. Brown patch symptoms can vary depending on the grass variety, the soil as well as climate. Once it takes hold, the disease can spread quickly. Problems With Zoysia Grass. Dense, carpetlike growth and outstanding drought tolerance make zoysia grass (Zoysia spp.) a welcome alternative to water. Zoysia Grass lawn tips on care for new & established lawns with a lawn maintenance calendar link. How to care for your zoysia grass, recognize problems, mowing. Brown Spots on Zoysia Grass. Brown spots on zoysia grass are a symptom of a fungal infection. Though brown spots are one red flag indicating a problem, many other.