September 17, 2008

Canadian Peat Bogs In Crisis

Despite the positive outlooks and press from some industry manufacturers of peat moss-based potting mixes and soil amendments, The Canadian Sphagnum Peat Moss Council has released updated warnings that the peat bogs of Canada are shrinking and not renewing as fast as anticipated.

Although peat bogs are renewable, even the most liberal minded of peat-product manufacturers and consumers will - and should - agree that it's an extremely slow renewal process. A slow rate which is exacerbated by both natural and man-made causes. *see: Global warming. It's because of that caveat, so many horticulturalists (both professional and lay) consider it non-renewable, and that may become a definite classification according to this cautionary press release issued by The Canadian Sphagnum Peat Moss Council in September, 2008. The innate slow renewal rate, combined with over harvesting and the aforementioned global warming implications, forebode an even more precarious future for the bogs and increased scarcity of peat moss.

Canada is, one of the largest suppliers of peat moss outside of The British Isles and Siberia. While peat is organic in nature, it adds little in the way of nutritional value to the soil. Shredded and half-decomposed leaves add more nutrients, improve soil conditions, retains moisture yet enhances drainage and makes for generally happier, fatter and more productive earthworms. Plus for many people, leaves are free and abundant, which certainly can't be said for peat moss considering the current (and possibly future) conditions for bogs such as the ones in Canada.

I still prefer minimal use of peat moss, however, in small quantities as part of my own potting soil formulation. Despite the consistent rise in peat moss prices, I've found combining it with compost, perlite and kelp meal is still more cost efficient than purchasing pre-mixed potting soil or seed-starting mix. But, like many other gardeners who rely upon peat moss for such applications, and for those people who do not have access to an abundance of leaves and/or compost, alternatives to peat moss must be sought. Right now - at least as far as a potting soil or seed-starting mixes are concerned Coconut-Fiber Coir is a very acceptable alternative. It is still more costly for those gardeners like myself who use either a great deal of potting soil or start a large number of seeds. But as more people purchase it and if peat moss prices predictably continue to rise (especially in light of this latest report out of Canada), the cost difference between alternatives and peat may be a wash.

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