If you do not want to spend hours digging a trench, you can opt to combine edging materials for a functional yet aesthetic landscape border. The sturdiest garden edging materials are plastic, aluminum, concrete and brick. These will not easily topple, so you can place them directly in your grass instead of digging a trench for them. For example, a plastic roll of edging, spikes, concrete mix and your choice of landscaping block can be used together. First, get your plastic fencing or roll spiked into the ground. Then, pour concrete mix from the inside of the edging to about one foot inside the landscape. Lay your blocks down on top of the mix. Fill in the gaps between your blocks with more cement. Spray everything with water to set the concrete. Cover any remaining visible concrete with dirt you used in your garden.