A trimmer for trimming around a sprinkler head includes: an annular blade member defining an annular region inside the annular blade member, the annular blade member being sized so as to surround the sprinkler head in close proximity thereto； a support member coupled to the annular blade member without blocking an extended annular region extending upward from the annular region for a distance sufficient to accommodate a user's foot； and a handle coupled to the support member. The annular blade member and support member define a foot pressure surface. The annular blade member includes two opposing blades. Each of the two opposing blades includes two curved edges, the two curved edges meeting at a point of the blade.
