Only remove one-third of the grass height when you mow to prevent damage and stress to the lawn. Taking too much off at once starves the roots and may expose new lower leaves to sunburn.

Edging is a vertical cut and trimming is a horizontal cut. Trimmers generally use heavy nylon string that rotates in a circular motion, parallel to the ground. However, edgers use short metal blades similar to a lawn mower blade, positioned perpendicular to the ground.

Trimming after mowing also ensures that you don't miss any spots that are unreachable with the mower. The second train of thought is that mowing should be done last, after trimming and blowing.

“Trimming” refers to cutting the turf height horizontally, just like your lawn mower does. Trimming is performed in places the mower cannot reach, like at the interior corner of a fence. The mower's turning radius will not usually allow for mowing all the way to the fence.