Fig. 2. Zoysiagrass areas of best adaptation based on average annual temperature, plant hardiness zone, average annual rainfall, and recommendations from state turfgrass extension specialists. North of the transition zone (green), the transition zone (yellow), and areas south of the transition zone (orange) where zoysiagrass is best grown are highlighted. Note: Drought and/or salinity tolerant cultivars should be used in the southwest USA. Recommendations for areas of use are based on information available at the time of publication. There are other cultivars which may perform well in these regions, but information on their performance is restricted to locally available anecdotal observations either due to their recent release or limited marketing and distribution. Not all cultivars recommended in a region may be locally available.

Image from Applied Turfgrass Science article:
Selecting Zoysiagrass Cultivars: Turfgrass Quality, Growth, Pest and Environmental Stress Tolerance