Can I add biochar to my compost?

Tuesday, 9 April 2013  |  HOTBIN Composting

What is Biochar?

It is similar to wood charcoal (BBQ logs) ground into pieces or powder. It is made under controlled conditions to get beneficial properties when the Biochar is added to soil.  Note some commercial Biochars are modified with items like extra nutrients and mycorrhiza fungi spores). If you want to know more about Biochar try the international Biochar site or similar

Can I add Biochar to my compost?

Yes. The biochar itself is inert, but the small particles will act as a bulking agent and help airflow. However it is an expensive form of bulking agent compared to wood chip!

How beneficial is Biochar added to the heap versus directly adding it to the soil?

Biochar won't 'breakdown' (ie compost), but it will be incorporated into your compost. The biochar will start to support and act when it is added to the soil. We do not suggest you add any biochar formulation which has mycorrhiza fungi spores added - in the hot compost heap they will be eaten by thermophilic bacteria.