Hi, Here is a good link on how to make them.
http://makeprojects.com/Project/Hypertufa-Planter/1044/1
Have fun!
Hypertufa is a combination of concrete/peat moss/vermiculite to make a lightweight material used to form over/around molds to create planters and other containers. There are a few recipes found in web search. I have "planned" on making some for a few years. Now that I am "re-retired" I plan on getting some done. Good luck and be creative!
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