"Bruce" wrote in message
...
[snip]
Old gardeners used to add it direct to the soil. I believe that it
has a
reasonably high nitrogen content and it darkens the soil so helping
it to
absorb heat. It has fallen out of favour because it is no longer
safe to
assume that it has a 100% organic origin, which would include coal.
That last sentence is ambiguous and both the possible interpretations
are flawed.
What wood go you know which is not of organic origin?
What coal do you know which is not of organic origin?
Franz
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