Ornamental grasses have become a popular commodity for landscapes over the past few years, as they can fit well in almost any type of garden theme. Ornamental grasses are an excellent choice for the landscape because there are so many different varieties, colors, and sizes. They also tend to be deer resistant which can be a plus in areas where deer are a problem.
Having ornamental grasses present can also add movement, height, depth, and long-season color. They can be a nice addition to plant beds as a backdrop to smaller plants. They can also work well around a patio and even provide some privacy screening.
When it comes to warm-season ornamental grasses, it's best to cut them back in the fall or by mid to late spring. Warm-season grasses will turn brown when the temperatures get cold, and once this has occurred, it's safe to trim them back at pretty much any time. If you do leave the trimming until spring, it's recommended that you make sure to cut the grasses back to the ground by late spring before new growth has time to start.
Ornamental grasses typically require limited care, especially if you choose native grass material that is already found in your area. These are commonly low maintenance options and tend to be drought-tolerant and require little to no fertilization.
When ornamental grasses grow too big, they may need to be cut. You can then clump some out and discard it. Karl Foerster, in particular, tends to grow very large and can really take over an entire area if not maintained. Ornamental grasses can also be divided and regrown in other areas of the landscape if desired.
References
Presley, Beth Hyatt. Adding Ornamental Grasses to the Landscape. (2022, April 10). Total Landscape Care. https://www.totallandscapecare.com/business/article/15041978/tips-for-maintaining-ornamental-grasses-in-landscapes