Types of Grasses Grasses can be categorized as either clumping and spreading. Clump-forming grasses form tidy mounds and spread slowly. Spreading grasses spread by creeping roots, and some can become invasive. If you have your heart set on a variety, only to find out it can become invasive, consider sinking a large pot into the soil and planting it in there. The pot will contain the roots to limit spreading.
Grasses Let's look at some popular ornamental grass groups.
Like their cousins, the lawn grasses, ornamental grasses are generally relatively durable and reliable. Most grasses prefer full sun. They tend to be tolerant of a wide range of soil types and prefer a pH between 5 and 7. Once established, most ornamental grasses have deep, far-ranging root systems, making them resistant to drought. However, give them some extra TLC during their first season by watering them throughout dry spells.