Question:
Would zoysiagrass be a good choice for a lawn in Iowa?Answer:
Zoysiagrass (Zoysia spp.) is a medium-textured, slow-growing, warm-season grass. When managed properly, zoysiagrass will form an attractive lawn. However, some of its growth characteristics may be objectionable.
Zoysia grows best in well-drained, slightly acidic soils. It does not tolerate poorly-drained soils. In alkaline soils, the color of zoysiagrass may be yellow-green. Zoysia performs best in full sun. However, it will tolerate light to moderate shade. The turf will be thinner in the shady areas.
Zoysiagrass is established vegetatively from plugs, stolons, or sod. Due to its slow growth rate, it may take two or more years to form a dense turf.
Zoysiagrass possesses excellent heat and drought tolerance. Also, a thick, well-established zoysia lawn provides few opportunities for weeds. Cool-season annual weeds, such as henbit, may be the biggest problem.
A heavy-duty lawnmower and a sharp blade are necessary when mowing zoysiagrass because of its tough, dense foliage. Zoysia should be mowed at a height of 1 to 2 inches. During the period of active growth (June to September), it will usually be necessary to mow on a weekly basis.
One characteristic that many home gardeners find objectionable is that zoysia is slow to green up in spring (typically mid-May) and goes dormant (turns brown) with the first frost in fall. In Iowa, zoysiagrass is dormant 8 months a year. The color of the turf during the dormant period is straw or pale yellow brown.
Another potential concern is its spreading habit. Zoysia may spread into flower beds, vegetable gardens, and into adjacent lawns. Once established, zoysiagrass is very difficult to destroy.