How to Make Concrete Garden Edging
Concrete garden edging is a cheap and effective way of protecting your flowerbeds from encroaching weeds and other unwanted wildlife. It also highlights your landscaping and can make your garden look considerably better, with more thought having gone into its design. Concrete is a relatively cheap and highly durable material for garden edging. Laying it out is a fairly straightforward job that any gardener should be able to handle with ease. Concrete garden edging typically comes in precast molds that you can install around your garden as required.
Step 1 – Dig a Trench
Prepare the surface by digging a trench for the garden edging. This trench should be about 8 inches in width. Dig it deep enough so that the bottom of it is below the frost line for where you live.
Step 2 – Place the Plywood
Cut the plywood sheeting into strips using a jigsaw. These plywood strips then need to be installed along the sides of the trench that you dug in the previous step. These will act as walls for the trench and hold the concrete mold while it sets.
Step 3 – Apply Sand
Spread a layer of sand in the bottom of the trench. Use a rake to make the surface smooth and level, making sure that it is as compact as possible. You can use a tamping tool to achieve this.
Step 4 – Make Sure the Surface is Level
Test to see if the surface is level by using a standard carpenter’s bubble level. The best way to do this is to lay a length of plywood onto the sand and place the level on top of this. If the surface is level, as it should be, the bubble should be in the exact middle. You may need to rake and compress the sand a bit more in certain areas to achieve a level surface.
Step 5 – Apply the Concrete
Mix the concrete with water as directed by the manufacturer’s instructions. You may also want to mix in some concrete pigment for a more specific color. Mix it in a bowl and make sure that it has the consistency of cake mix before continuing. Pour the concrete into the mold, on top of the sand. Spread out the concrete evenly and try to make the surface as smooth and level as possible. Use a trowel to achieve this. When the concrete has been poured in, spray a little water over it to cure it. Finally, cover the concrete with a tarpaulin to keep the weather out while it sets. Leave it for approximately 1 week to set, or as directed by the manufacturer’s guidelines.
Step 6 – Finishing up
Once the concrete is set, you can remove the tarpaulin and the plywood molds. Before planting the flower bed and working in the area, allow the concrete an additional day or two to set completely.