Rake the wood mulch so that it is an even thickness over the landscape bed.
Spread the landscape fabric over the wood mulch. Secure the edges with pins. To place the fabric over an existing plant, cut an X into the fabric with a knife and open the flaps to place it around the plant. Take care not to damage the plants as you place the fabric.
Shovel the rock mulch onto the landscape fabric. Spread the rocks until you achieve an even thickness of at least 3 inches.
Install landscape edging to the beds to keep the rock mulch from rolling into the grass. If rock mulch spreads onto the adjacent grass areas, it can damage lawn care equipment.