How to use: Mix into the top 30 cm of soil in your vegetable patch in Autumn, Winter or at the start of Spring to restore soil fertility. You can also mix biochar to organic compost to make high quality compost.
We recommend a minimum of 10% biochar in your planting medium. There is no recommended maximum application rate, so far studies have shown that the more you add the better the results.
For more tips, see here: http://www.oxfordcharcoal.co.uk/four-simple-ways-to-use-biochar/