By buying pure Biochar you not only hugely enrich your soil, but add 'carbon capture technology' in your garden.(This is totally pure Biochar not mixed with anything else !)
Every 10 kg bag of Biochar that you buy will not only really, really increase the fertility your soil, but will capture 7 kg of Carbon for probably thousands of years.
Totally organic, Environmentally friendly, Eco friendly fertiliser.
Made locally from waste wood Oxford Biochar is not only perhaps the longest effective fertiliser you can add to your soil but aids water retention and stops the leaching of nutrients.
We totally believe in Biochar, and now I mix it with all my compost, about 10% does it.
For a really detailed exposition of Biochar, take a look at the report from 3 Professors https:www.dropbox.com/s/1zcjw6pqhakqegs/CG_BBE_2013.pptx