It is only in recent years that they have become popular in the United States. Their varied forms, colors, and textures make them attractive, but lack of information on hardiness and performance in the northern states has limited their use. Steven's County is on the northern edge of this zone. These temperatures are typical of many states, ranging from Maine to Montana.
Ornamental grasses are attractive landscape plants.
In cold climates, plant ornamental grasses in the spring. Fall planting can be successful if container plants are used, but winter protection may be necessary. Local nurseries and garden centers often sell grasses and usually supply large plants, but typically do not have the variety that is available from mail order nurseries. Determine spacing needs according to the desired landscape effect and the plant's setting. For example, grasses used as a hedge or screen are usually planted closer together, while individual specimens are typically spaced further apart.