How do you make fake rocks cheap?

VIDEOClick to see full answer. Keeping this in consideration, how do you make fake rocks outdoors?Mix 3 parts perlite, 3 parts peat moss and 2 parts Portland cement in a wheelbarrow. Stir them well with a small shovel to create a uniform mixture. Add water a little at a time, stirring thoroughly between each addition. Stop adding water when the mixture reaches the consistency of cookie dough.Subsequently, question is, how do you make fake rocks out of cardboard? Use either a cardboard box or polystyrene foam to make the frame of your rock. Then cover the frame with paper mache to give it a rock-like texture. Let the paper mache dry, give it a few coats of spray paint, and then your fake rock is ready to use! Just so, how do you make fake rocks with spray foam? Video of the Day Step 2: Shake the Can. Shake the expandable foam can for 30 seconds or as recommended on the label, as this may vary by brand or product. Step 3: Attach the Nozzle. Step 4: Creating the Basic Rock Shape. Step 5: Shaping the Wet Foam. Step 6: Shaping the Hardened Foam. Step 7: Painting the Faux Rock. How do you make lightweight fake rocks? How to Make a Lightweight Faux Rock for a Backyard Form cardboard boxes into a general shape of a faux rock. Cut poultry netting with wire cutters and place around the outside edge of the box form. Add 1 part Portland cement mix with sand, 1 part perlite or vermiculite and 1 part peat moss to a container.