Berm definition in landscape terms is:

• A. A raised bed that is not surrounded by a wall
• B. A narrow planting bed along the edge of a garden or walkway
• C. The process of cutting away a ring of inner and outer bark all the way around a tree trunk
• D. The number of days between the last killing frost in spring and the first killing frost in the fall

Answer: (A)

A berm is a raised mound of soil used in landscape design. It’s created by piling earth to elevate ground level and shaping it, and it isn’t surrounded by a wall or hard edge. This makes it different from a narrow planting bed along an edge, which is simply a border or edging feature, and from tree girdling, which is the act of removing a ring of bark to injure or kill a tree. Berms are used to add height, define spaces, improve drainage on slopes, and screen views or direct traffic, which is why describing it as a raised bed without a surrounding wall best captures its form and function in the landscape.