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At the average rate of 0.6 to 0.7 millimeter per year, Canadian peat bogs add 6 to 7 centimeters in depth (less than 3 inches) over the course of a century. It will require 3,000 years to amass the 2-meter depth needed to justify the costs of extraction. Under these conditions, a fully mined peat bog will not be able to support a second “harvest” for at least 3,000 years.
Can a resource that renews itself this slowly ever be considered sustainable? If we balk at cutting down 500-year-old trees in old-growth forests, should we accept the extraction of 3,000-year-old sphagnum moss from peat bogs?
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— Sorry folks, peat moss for gardening isn’t very green. Learn more …