The majority of landscaping berms are 18"–24" tall. The berm design can have many peaks to create interest as well as the shape to execute its function. Each section is graded to control water flow and promote native plant growth. Landscaping berm designs vary depending on location, climate, and personal preference. Some examples include: flat, peak, terraced, and walled gardens. The type of soil also influences what kind of berm is used; if it has good drainage, a flat bed with plants in raised beds is sufficient. If the soil is dry, use something that will not be removed by rain or snow melt — such as crushed stone or concrete. Berms are useful for reducing erosion, controlling floodwater, and providing habitat. They can also be used to highlight features of the landscape or as visual appeal. Berms are commonly made from dirt, grass, or rocks pulled from nearby. The size of the berm should match that of your vision; if you want a smaller one, go ahead but make sure you can still see it! Berms are easy to build and come in different shapes and sizes. Use the right material based on how long you expect them to last as well as your budget.