Cement Forms for Edging

6-by-4 Curbing

• 6-by-4 landscape curbing looks like a rectangular concrete box that measures 4 inches tall by 6 inches wide by 24 inches long. This curbing is available in the standard gray color or in red or brown. It's also possible to have special designs etched into the concrete to give it additional decoration. Install 6-by-4 curbing in a trench along the edge of the driveway or flowerbeds with the top just barely above ground level. This allows the 6-by-4 concrete edging forms to blend in with the landscape while still providing the lines of separation you want when you add edging. Set the curbing end to end to create a straight line. To create curved lines, use special curved pieces with similar measurements.

6-by-6 Curbing

• 6-by-6 curbing is 2 inches taller than 6-by-4 curbing. It's also ideal for setting in a trench, but the top remains above grade level. This style of curbing creates boundaries within the landscape that are easily visible. The larger cement forms are large enough to act as small retaining walls for flowerbeds, and they help keep gravel from driveways from spilling onto the lawn.

Slanted Curbing

• Slanted curbing combines the retaining wall capabilities of 6-by-6 curbing with the ability to blend into the landscape of 6-by-4 curbing. The taller edge of slanted cement forms rests on the side of the flowerbeds and driveway where it acts as a barrier. The lower front edge shows the wider top edge of the curbing rather than the narrower side. It's possible to color slanted curbing and to add designs and texture to it. This makes it an ideal choice for decorative lawn edging.

Mower Curbing

• Mower curbing has a taller back that holds decorative rock, mulch and other items in flowerbeds and driveways in place. The lower front side has a special track built in that accommodates the wheels of a riding lawn mower. As long as you run the mower's tires in the track, you don't have to worry about nicking the curbing with the mower's blades. You no longer need to use a string trimmer to finish the lawn, either.