The second course of the raised-bed rock garden is simply a smaller version of the first. That is, the diameter of the stone perimeter that you lay on top of the first layer will be smaller, forming a circle within a circle.
I used my heaviest stones for the first course. For the second course, I did reserve some large rocks, but it was the prettiest rocks, in particular, that I laid aside. That's because the rocks of the second course will show up more, being closer to the eye.
With the two layers constructed, we're ready to turn to plant selection in Step 4....
