This push-behind machine uses a vertically positioned ... inches into soil to create that border. Unlike a string trimmer that is handheld, a lawn edger is supported by a set of wheels.

We used the system this summer to trim lawn edges, prune trees, and tidy up hedges. As a string trimmer, it reaches full speed in about a second, cranking along at 6,200 RPM as it clears a 16-inch ...