When grass grows next to driveways and sidewalks, it slowly begins to creep over these paved surfaces. Between debris from mowing the grass and other debris that settles in along the edge between the grass and the paved surface, the grass will have organic matter available to root into. A gas edger has a vertical spinning blade that cuts through the grass that overhangs the paved surface. Left behind is a well-defined, clean edge between your lawn and your driveway or sidewalk. When purchasing a gas edger, there are a few things you need to look at to make sure you choose a quality model.
Assess your lawn size to determine how big of a gas edger you need. If you only have a small amount of edging to do, a small model will suffice. However if you have tons of edging to do, a larger model may be the better buy.
Consider edger attachments if you have only a small amount of edging to do. There are quality edger attachments available that can be hooked up to weed trimmers.
Purchase an edger with a great manufacturer's warranty. Steer clear of edgers that have limited or no warranty. You don't want to be out extra money shortly after purchasing your edger.
Consider purchasing an edger with electric start. Lawn machinery can sometimes take forever to start using a pull cord---electric start allows the engine to be cranked over faster, which makes starting easier.