Abstract: A lawn edging secured to the ground includes a trough having a pair of spaced apart first upright sides. A major portion of each of the first upright sides is in face-to-face abutment with at least one of the ground and a structure. The trough is secured to the ground, and interposed between an adjacent lawn and an adjacent structure. An insert has a pair of spaced apart second upright sides where at least one of the second upright sides has a height greater than the height of at least one of the first upright sides. The second upright sides are detachably insertable between the first upright sides of the trough such that at least one of the first upright sides extends above at least one of the second upright sides so that the insert can be detached from the trough to enable the lawn adjacent the trough to be mowed.