Ok everyone, I am about to make stones to build retaining walls around my raised beds (sick of edging), and if all goes well I would also like to replace an old retaining wall in the back (made of railroad ties) that levels the yard. I would love to make the bricks of hypertufa so that the moss/lichens could soften the look, but I was under the impression that they break down within a few/five years. Is this true? I could use one recipe for the raised beds and a different, stronger recipe for the wall in the back since it will have a much harder job if that is necessary, but I would like them to "match" if possible. Can someone share a recipe that would be appropriate for both applications? I've made my molds and I'm ready!!
Thank you so much!