Sue, what are hypertufas?
Hypertufa planters or pots are lightweight pots made from a mix of Portland cement, water, and perlite, vermiculite, or sand. They're popular for gardens and indoor planters, and the hypertufa mix can also be used to create artwork and ornaments.
The advantages of hypertufa is that it is very porous and the Portland cement slowly releases some calcium and magnesium that plants need for healthy growth. Additionally, you can get quite creative with the container objects that you create, and this can be done fairly easily at home.
We are going to have a hypertufa making class at my place on Wednesday, March 27 from 1-3pm for anyone that is interested. Just check out the events page to RSVP and to get more information.