Edging is designed to keep weeds and lawn grasses with runners from creeping into your bedding. Edging will also keep mulch in your beds and out of the lawn. There are a wide range of landscape beddings available on the market, but one of the most popular is plastic edging. Plastic edging that is installed correctly may last up to 20 years without needing replacement. Proper installation is the key to making plastic edging work in your flower beds.
Remove sod and soil in a trench to a depth of 6 inches surrounding the flower bed using a spade or a scoop shovel. Remove any roots you encounter so that your trench is a uniform depth all around. The trench should be approximately 12 inches wide, and should slope down from the surface of your flower bed.
Turn the edging so that the V-shaped curl points downward and the tube-shaped curl points upward.
Connect 20-foot sections of edging with 8-inch connectors. The connector should be inserted halfway into the tube at the top of one piece of edging and then pushed into the tube at the top of another piece of edging. Do not accidentally push the tube completely into one piece of edging while attempting to push it halfway into the other piece of edging. Cut the edging to fit your bed with a utility knife.
Push the edging up against the outer edge of the trench so that the top curl of the edging is only one-third visible above the soil line. Do not place the entire top curl above the soil line. If you have done so, then you have set the edging too high.
Place the metal stakes just above the V-shaped curl in the bottom of the edging. Use four stakes per 20-foot section of edging. Pound the stakes into the ground vertically throughout the soil. This will help prevent frost heave from lifting the edging from the soil.
Pull loose soil around the edging so that it is under the edging and around the V-shaped curl. Stomp on the soil to force it into the cracks in the edging. Sift loose soil into the cracks between the edging and the outer wall of the trench for a more snug fit.
Fill in the trench behind the edging with soil.