Hypertufa is a technique for making lightweight stone-look-alike pots out of common ingredients available in gardening and home or hardware centers. The most common recipe for the mixture is 3 parts peat moss, 3 parts perlite, 2 parts Portland cement and water mixed to the consistancy of moist cottage cheese. Larger containers require reinforcement using chicken wire or fiberglass reinforcement fibers. Molds can be very simple–cardboard boxes or as in this case, a plastic flower pot. Unfortunately, this one did not turn out exactly as planned. Just the minor little detail that it cracked when I ws trying to remove it from the mold…. Learning Curves can be so tedious. Back to the drawing board.
Practice makes perfect. See a successful version at https://coco724.wordpress.com/2009/05/29/hyper-tufa-revisited/