Two-stage and three-stage snow blowers have augers that operate an inch or so above the ground as well as adjustable skids that provide clearance to prevent the machine from scooping up gravel.

Read more: 25 Flower Bed Ideas That Will Bring Your Outdoor Space To Life When digging up a shallow trench to lay your gravel, there'll be clumps of soil along the edges. You'll need a spade ...