Spring maintenance is important for Zoysia grass upkeep. You should remove dead leaves and other materials from the previous seasons to improve passage of air, nutrients, and water. This will help your zoysia lawn to return to its lush, green appearance after a season of dormancy.
If you have a confined turf area, you can remove this material best by setting the mower at a lower setting to cut at approximately one to two inches height and mowing the lawn in two directions (north to south and east to west). After doing this, use a spring or grass rake to remove all dead materials by vigorously raking. This will promote earlier growth by removing the shade provided by old leaf surface.
You can also use a de-thatcher as well, which will help simplify the project.