No peat sources are sustainable. Peat was laid down millions of years ago. They ain't making it any more! See original post
Not true - but then none of the anti-peat comments on this thread are actually true. There are more than 4,000,000 km2 of active deep peatlands around the world, covering an area of more than 400 million hectares producing more than 4 billion cubic metres of new peat annually. This does not include the increase on shallow peats less than 0.5m deep, which may be as much as twice the figure for deep peats.
Peat is laid down faster than any other soil mineral aggregate - sand, silt, clay, chalk all take millions of years to form and lay down a metre depth. Topsoil forms at the rate of 25mm over the course of a thousand years while sphagnum peat is laid down 40 times faster, at the rate of1mm a yeat - 1 metre depth of peat is formed in the time it takes to lay down an inch of topsoil.
There's a reasonable argument against the use of peat from some raised lowland bogs in the UK, where they support 4 species of threated invertebrate and another 4 species of rare moss on an area of just 5,000 hectares. This argument does not apply where peat wetlands stretch for thousands, tens of thousand, hundreds of thousands or millions of square kilometres.