Zoysia is a genus of warm-season creeping grasses in the family Poaceae (order Poales), comprising around a dozen species native to Asia, Australia, and islands of the Pacific. The genus takes its name from the Slovenian botanist Karl von Zois (1756–1799). Species range across Japan, Korea, China, Southeast Asia, the Indian subcontinent, New Zealand, and Queensland, with naturalized populations established in parts of Africa, North and South America, and scattered oceanic islands.
Zoysiagrasses are low-growing, mat-forming perennials that spread by stolons and rhizomes to form dense, fine-textured turf. They are valued for their tolerance of wide variations in temperature, sunlight, and soil moisture. In climates with distinct warm and cool seasons — such as subtropical regions of the southeastern United States — they are actively growing during the warm, wet summer and enter dormancy in the cooler, drier winter months.
The genus is best known horticulturally: several species and cultivars, most notably Zoysia japonica (Korean lawngrass) and Zoysia matrella, are among the most widely planted warm-season turfgrasses worldwide. They are used extensively on golf course fairways and teeing grounds, and as residential lawns. Their dense growth habit suppresses weeds effectively, reduces erosion on slopes, and provides good wear tolerance.
Etymology
The genus Zoysia was named in honor of Karl von Zois (1756–1799), a Slovenian botanist and patron of natural science.
Distribution
Zoysia species are native to a broad arc spanning Japan, Korea, China, Southeast Asia, the Indian subcontinent, Australia (Queensland), New Zealand, and various Pacific islands including Micronesia and the Ryukyus. Several species — notably Z. japonica and Z. matrella — have been widely naturalized in Africa, North and South America, and scattered oceanic islands through deliberate introduction as turfgrass.
Ecology
Zoysia grasses grow naturally in coastal areas and open grasslands. They are adapted to warm, seasonally dry conditions and enter winter dormancy in temperate and subtropical climates. Their dense mat-forming habit suppresses competing vegetation and provides effective ground cover on slopes.
Cultivation
Zoysia grasses are among the most commonly planted warm-season turfgrasses globally, prized for their tolerance of heat, drought, and varying light levels. They are a standard choice for golf course fairways and teeing grounds and are widely used as residential lawn grass in temperate and subtropical regions. Their fine texture, soft feel, and low growth habit make them popular aesthetically. They require less fertilization than some competing turfgrasses such as St. Augustine grass and are less vulnerable to insect and fungal damage. Sod is commercially available in some regions. Turf specialists recommend reel blade mowers for the best cut quality. The cultivar 'Emerald' (Z. japonica × Z. tenuifolia) is particularly widely grown.
