My rock garden

Yesterday, I cleaned my rock garden. My garden is sloping, and the rock garden is at the highest corner, getting the full sun. Usually it is full of flowers and butterflies, but the overcast skies have made the geraniums leggy. The Katie ruellia flowers profusely when it gets more sun. There is also a yellow lantana, a miniature white butterfly bush (buddleja), and daisies, and a bamboo grass.
When I started the rock garden a few years ago, these type of rounded granite rocks were lying around all over the place. Now with all the construction going on , there is no rounded rock to be seen.
One friend who saw it the first time, advised me to throw away all the rocks, and keep potted plants instead.