Zoysia grass is normally grown in the warmer climate of the southern United States. It is quick to grow in the spring and has a high drought tolerance. Even though it is well-suited for hot temperatures, it will need water regularly, especially after it is first planted.
Begin watering the area several days in advance of planting. Start watering four days before you plan on laying the sod so the moisture will have a chance to sink down and moisten more than just the top layer. Plan on watering 1/2 inch every evening until you are ready to plant the sod. Lay out a shallow dish to measure how much water the area is actually getting.
Lay the zoysia sod on the moist soil in the early morning or early evening. This will help to lessen the amount of heat the sod is exposed to on the first day. Water the sod immediately after laying it with about 1/2 inch of water.
Sprinkle the planted sod three times a day: first thing in the morning, at noon and in the early evening. If the sun is especially hot as in the middle of the summer and you are in the south (where Zoysia is commonly planted), water the lawn every three hours during daylight hours.
Arrange for systematic watering during the week if you have sandy soil or live in an especially warm climate. The Zoysia grass is especially drought-resistant and will roll up its leaves to conserve moisture, but it should get at least 1 inch of water per week.