The Country Gardens special edition to BHG Early Spring 2010 issue gives a tease of "Easy to Make Hypertufa Troughs."
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"Easy to make, these cool containers work in any style garden. Beth Jimenez and Amelia Lane, owners of Lasting Impressions in Raleigh, show you how to make inexpensive hypertufa troughs."
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No article in this magazine but go to their link. A little troublesome to get to
but here it is.
Two other links from BHG site are:
Hypertufa troughBuild a Stone Look Trough