The orchiata looks to be a new high end product for strict orchid growing, which is fabulous (I'll be ordering some for some of my orchids) but probably over kill. A standard orchid mix will suffice. As far as safety, they "should" all be safe. I have yet to run across an orchid mix that had ferts in it, but I am sure they exist. Depending on how you use the long fibered sphagnum (some people layer it, some mix, I mix it in) you could use up to 2 or 3 bags. As far as the quantities, the only thing I buy in cubic feet is peat moss and I buy it in 3 cf bags (weighs about 70 lbs). I get most of my stuff at Home Depot, but you probably don't have one close to you.


Education is the most powerful weapon we can use to change the world ~ Nelson Mandela