Zoysia grass is a native warm season grass of China, Japan and other areas of Southeast Asia. The grass is a sod-forming perennial which spreads from rhizomes and stolons. Zoysia grass is among the first grasses to green in the spring. There are different varieties of zoysia grass which differ by their texture and stiffness of leaf blades. Zoysia grass is well adapted to growing along the Atlantic and the Gulf coasts in the United States.
Zoysia japonica was introduced in the United States in 1895. The variety is also referred to as Korean or Japanese lawn grass and is more cold tolerant than other zoysia varieties. Zoysia japonica has a coarser texture than other major species of zoysia and is the only variety which is easy to establish with seed. The blades of the grass are slightly hairy and a bright green color. The grass changes to a distinct straw color during dormancy or seasonal drought.
Zoysia matrella is a native of Manila and was introduced in the United States in 1911. The variety is mainly a tropical and subtropical grass but is easy to grow as far north in the United States as Connecticut. Zoysia matrella thrives in areas of moderate shade and forms a heavy mat when grown in the sun. The grass has sharply pointed, narrow, wiry blades. Zoysia matrella retains a lush green color throughout the year in tropical weather conditions but turns brown in cooler areas after hard frosts. The grass remains dormant until late spring. Zoysia matrella has a slow rate of establishment and is best propagated with sprigs.
Zoysia tenuifolia has the finest texture among all the Zoysia varieties with short, fine, wiry blades which grow to form a fluffy, thick turf. The variety has a very slow growth rate and is commonly used as a ground cover. Zoysia tenuifolia is also referred to as Korean velvet grass and is propagated with plugs and seeds. The grass has a unique mounding or clumping appearance and is usually left undisturbed to retain its natural look. Zoysia tenuifolia has a good shade tolerance and a dark green color. The grass is a popular choice in oriental gardens, pond banks and rock gardens.