If you have a mature, established zoysia grass lawn, drop your mower a notch and give your lawn a “buzz-cut” for the first mow of the spring with a rotary mower that has a sharpened blade. Bag up all the material to keep excess clippings from clumping or causing disease. After your initial “buzz-cut,” begin mowing your zoysia grass at the desired height. Keep fine bladed zoysias mowed between 0.5–1.5 inches. Keep coarse bladed zoysia grass mowed between 1–2 inches. You can return to spreading your mower clippings on the lawn at this time.
Don’t overwater. Zoysia needs about 1-inch of water a week considering rainfall.
Zoysia mowing heights during the summer generally range from about 1–2 inches. Finer-bladed zoysias should be kept at a height of 0.5–1.5 inches. When mowing during the summer, never remove more than 1/3 of the leaf blade at a time.
Do not overwater the grass. Zoysia grass only needs about 1-inch of water weekly. Water for longer periods of time, less frequently and in the early morning hours.
Mowing heights for finer-bladed zoysias typically range from 0.5–1.5 inches while wider-bladed zoysia mowing heights range from 1–2 inches. Depending on the type of zoysia you have, your lawn should typically be kept between 0.5–2 inches. During the fall, mowing will occur less often—keeping your zoysia slightly will encourage deeper root growth which helps it survive in colder temperatures and during winter dormancy.
Water less as temperatures drop—too much water will lead to disease. Water to prevent drought stress while grass is actively growing and after the beginning stages of dormancy to prevent dehydration.