replying to Laura J, M Casey wrote:
In addition to potential downside of using vermiculite, there is the fact that
peat moss harvesting is environmentally unsustainable. Even though peatlands
occupy only 3% of the Earth's surface, they store a third of the world’s
soil carbon, twice as much as forests, and when they are harvested, carbon
dioxide is released, the major greenhouse gas driving climate change. Many
people recommend coconut coir as an environmentally friendly alternative to
peat moss.

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