Conventional stucco is a cement- and sand-based material applied in layers that dry to a hard, mortarlike finish. The stucco is backed by metal lath, building paper (tar paper) and structural wall sheathing, such as plywood. Hanging lightweight items from stucco walls requires only a simple plastic wall anchor that's tapped into a hole drilled through the stucco and wall sheathing. Note: If your wall is synthetic EIFS stucco, contact your home's builder or siding installer for recommendations on installing anchors; do not install anchors without professional guidance.
Hold the decorative item against the wall and use the pencil to trace inside the holes for the mounting screws.
Drill through the center of each traced hole with the masonry bit. This bit will drill through the stucco (about 7/8 inch thick) easily but may slow when it hits the sheathing or a wall stud behind the sheathing. If necessary, switch to a wood bit to complete the hole. Drill about 1/8 inch deeper than the installation depth of the anchor.
Fill each hole will silicone caulk. Insert an anchor into the hole and gently tap it flush to the wall surface with a hammer.
Hang the item with corrosion-resistant screws driven into the anchors.