How to Edge a Lawn With Scallop Topped Concrete

Measure how many feet of the edging you'll need. Circular edging comes in standard sizes of 3 to 6 feet in diameter to go around trees and circular flower beds. If the lawn's edge is longer than the measuring tape, mark where it ends with a bit of spray paint or flour on the grass, pick up the tape and stretch it out again. When you've finished count the marks and multiply by the length of the tape measure. For example, if you have four marks for 50-foot tape measure you'll need 200 feet of concrete.

Dig a trench around the perimeter of the space you want to edge that's 3 inches deep and about an inch wider than the width of the edging. Lay a carpenter's level at the bottom of the trench. Fill in or dig out the trench a little more so the bottom is level.

Lay each piece of edging in the trench with the scalloped side up and so the ends butt up against each other. Fill in the sides of the trench with some of the removed soil so there aren't any gaps.

Water around and on top of the concrete when all the pieces have been laid. Adjust any pieces which may have sunk in a bit by lifting it out and adding soil to the trench.