This synthetic chalk could substitute for some of the Portland cement now used in construction.

FORBES: Thought Leaders

These days, authentic stone basins are scarcer than bustles, so trough- planting zealots have taken to making their own equally porous (and much lighter) containers out of hypertufa a mixture of portland cement, peat moss, perlite and fibermesh.

WSJ: Trough Gardening: A Challenger to the Terrarium Craze?