Pebble flower pot 1. Use small tin pail. Make drain holes in the bottom. 2. Next, apply base (we used interior ready-made mortar). Apply about 0.4-0.6 mm thick 3. Place the mesh grid. Push it a little to the mix to help stones sit evenly across the surface. Begin laying stones. 4. When you have placed the stones around the whole surface, let it dry completely. 5. After dry, mix grout to fill the holes between the stones. Remove excess grout after drying by using washcloth soaked in water.