HyperTufa: I began making hypertufa in 2007. My recipe is a mixture
of peatmoss, pearlite, portland cement and water. Unlike the traditional hypertufa planters, I form my pots around the
outside of bowls and boxes. Once dry, I remove the mold, let the pot cure, drill drainage holes in the bottom if desired...and
bam..you have a really nice rustic natural looking planter. Everyone wants to know "can you leave them out in the
winter"? Its totally up to you. I have pots that have been outside for two years now and they are just fine.
They are filled with dirt and succulents. They have been burried in snow and ice and they survive just fine. I
would not suggest leaving an empty pot outside in the winter. If your worried your pot will break, but it under
a tree or bush, or if empty, put it in the shed or garage for the winter.