The base coat on this planter is plain old hypertufa consisting of (using 2-pound coffee cans for measurement) one can of peat moss, one of Pearlite, ½ of Portland Cement, one of water (there about), and a little lime putty. I’d made the armature using two old, sun-beaten, brittle planters that were ready for the landfill fastened together with sheet metal screws and covered with two layers of poultry wire (see photos below). So far I’ve found that this type of Hypertufa mix is good for casting but is honestly difficult to daub onto wire without either ready mix joint compound or lime putty to make it stickier. Even then it doesn’t seem very workable. Perhaps more cement to the mix would make it stick to the armature better. I'll continue to research and experiment. As it was, I applied the hypertufa with some force to push it deep into the wire and keep it from falling off. For the design on front I used the same mixture as above, but substituted cellulose insulation for...
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