
12-16-2007, 03:16 AM
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Join Date: Nov 2004
Location: Pahsimeroi, Idaho
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"Tree fern" is really a kind of generic term, and may include several genera and species, but I wonder where the information that it is a non-renewable resource came from, since some species are often cultivated and harvested for use by orchid growers, and the Australian type is considered a pest in Hawaii, with plans to eliminate it from there, because it is so voracious. As with cork bark, which either can or cannot be a renewable resource, depending upon how it's harvested, I think we need more information on the tree fern bark and panels before eliminating this from our own resources. Sphagnum moss has the same concerns, or perhaps more so, as it is harvested from bogs en mass, not cultivated. Peat moss of the garden variety is even a more dubious concern, as it is also harvested from more ancient bogs of many, often ancient layers. It is not renewing as fast as it's being used. Neither the New Zealand nor Canadian sphagnum mosses are cultivated deliberately as renewable resources that I can discover. I'm just a bit confused here about the concern over tree fern vs using sphagnum, and wonder where the information came from.
Consider organic compost as an alternative, although I still think the long brown sphagnum is close to being a necessity, at least a bit of it in a mix, because of its incredible qualities.
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Patty
Advice is like kissing: it costs nothing and it's a pleasant thing to do. (George Bernard Shaw)
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