Here's an old thread that lists most of the trade journals for this industry. None of them are 100% hardscape related. But many of them touch on hardscape stuff regularly. You can figure out which ones I am referring to just by the title of the publication. http://www.lawnsite.com/showpost.php?p=853050&postcount=17 My favorite on the list is Water Gardening News. Awesome stuff in every issue. And all those listed are free.