With the excavating done, line the trench with the 2-inch sand base. Tamp down the sand base, to make it firm.
Now begin laying the mower strip, inserting the interlocking concrete pavers into the trench. As you proceed, check with a carpenter's level (see photo) to make sure the course of the mowing strip remains level (assuming you're working on level ground to begin with, of course). To make adjustments in height, tap down on the interlocking concrete pavers with your rubber mallet or add sand, as needed.
With the mower strip finished, on Page 8 we move on to "Phase II" of the project: opening up the planting bed and installing the plastic garden edging....
