Casting in hypertufa is fun and not at all difficult. Hypertufa is a mixture of Portland cement, sand and peat moss. If you want you can replace the sand with perlite, it makes the pots and trays a lot lighter as perlite weighs almost nothing.
Rustikal, aber schick! So einfach kannst du Deko aus Beton selber machen
Leaching Your New Hypertufa Pot: For small pots, soak with a mild vinegar & water solution for days. For larger pieces, times a day mist with water that has a little vinegar added then hose off for 5 days.