The moss needs the conditions of the rain forest. It thrives in older, or old grow fir forests, and heavy rain conditions. It's hard to get it to grow in most other conditions. The same thing with huckleberries, the plants are often found growing out of old fir stumps, and in forests that have a lot of fallen fir trees. The soil in and around a fir is I believe very acidic. Plants like strawberries will tend to thrive under a fern. But then the plants like Sphagnum moss, and huckleberries seem to need a decaying fir tree to survive. Most of this has been only my observation of where I have found the moss, and huckleberries growing, but as far as I know there are no known commercial growing operations of either plant. All the moss that is sold in the Floral wholesale houses comes from the existing natural environment. It hasn't been farmed. So trying to grow it anywhere, but on the Olympic Peninsula would most likely be a lesson in futility.How do you keep sphagnum moss alive? Unless it is buried under the grass, moss always seems to die around here. I have quite a few metal planters that I'd love to have lined with moss. So, I'd need to know how to grow more moss from whatever I can get my hands on.