At our spring Festival, People asked us for the Recipe for the Hypertufa Troughs and Seats. So here it is. This recipe is from the Book:
Recipe # 2
3 buckets portland cement
3 buckets masons sand (fine textured sand)
3 buckets sifted peat moss.
1) Sift the peat moss. Place hardware cloth across a large bucket or wheelbarrow. Rub the peat moss across the hard-ware cloth, sifting it through the mesh. Discard any debris or large particles.
4)Shape and Cure the Piece. Sculpt the appearance of the piece by knocking off the corners and sharp edges. Add texture to the sides of the piece by using a paint scraper or screwdriver to scrape grooves into them. Finally, brush the surface with a wire brush.
*Wrap the piece in plastic, and put it in a cool place to cure for about a month. Remember, the longer the hypertufa cures, the stronger it will be.
*Unwrap the piece and let it cure for several weeks. If you're building a planter, let it cure for several weeks, periodically rinsing it with water to remove some of the alkalinity, which could harm plants that are grown in the container. Adding vinegar to the rinse water speeds the process.
*After the planter has cured outside for several weeks, move it inside, away from any sources of moisture, to cure for another week or so.
*The fiberglass fibers in recipe #1 produce a hairy fringe. Make sure pieces made from this recipe are dry, and then use a propane torch to burn off the fringe. Move the torch quickly, holding it in each spot no more than a second or two. If pockets of moisture remain, they may get hot enough to explode, leaving pot holes in the piece.
*Apply a coat of masonry sealer to basins or other pieces that must hold water.
Visit: for an excellent article on making Hypertufa troughs: http://www.taunton.com/finegardening/pages/g00117.asp