I'm not sure if it's actually a rockery, but as it is on a slope and has rocks in it, that's what we call it. It had got very overgrown and looked rather sad, so last year hubby cleared out all the plants and weeded it. Then I weeded it a bit more and replanted it, adding lots of potting grit as alpines hate getting waterlogged.
Our efforts seem to have paid off and I'm rather pleased with how it's looking at the moment. It just needs a liberal sprinkling of alpine grit as a finishing touch to keep the weeds down and the moisture in.