Janice,
I used a commercial mix bought at my local regular nursery which seemed at first look way too fine and "peat-mossy" to be an orchid mix. I started using it for terrestrials as this one, and they seem to like it. For the exact brand name, it is right now in an area of my yard which isn't easy to get to. Too much snow!
Kathy, thanks. And I do understand about the need to talk in pictures.