Professional Lawn Edging and Trimming This video showcases professional and detailed lawn trimming and edging techniques using a string trimmer (weed whacker). 1. Roadside Edging * Scene: A professional landscaper/gardener, wearing work clothes and boots, is performing edging along the border of the lawn, which meets a small ditch or dirt area by the roadside. * Action: He uses the string trimmer vertically to create a very clean, sharp, and neat edge between the grass and the surrounding area.