Personal Use

There are various ways to use biochar at home or on a small property:

Add biochar to any type of compost system. 20-30% by volume will speed the composting process as well as hold on to nutrients that tend to offgas.

Replace peat in potting mixes in a nursery.

Add to compost toilet systems to reduce smell, adsorb nutrients, and fast track the resulting compost.

Add to any deep litter system for any kinds of animals you have eg chickens, rabbits, goats, etc. Again this will reduce odours, adsorb nutrients, and enhance the resulting input into any compost process.

Place biochar into a bowl/breathable bag in your house or car as an air cleanser.

Add to your garden soil - it improves both sandy or clayey soil types. It increases the drought resilience of trees during dry periods if added to the bottom of the planting hole. Smaller particle size is better. It can be innoculated with either nutrients or biology or a combination of both to suit your context.

Here is an old. but useful post with many more potential uses:


What interests you?

Earth and Climate Care

Learn more about why and how to use biochar for beneficial impact.

Biomass Management

Find beneficial ways to manage everything from tree prunings to forestry slash, plus municipal waste and more.

Policy Development

Learn about benefits, risks, and costs. Engage in policy development and proposed policy changes.


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Personal Use

Learn about and access biochar for home, garden, pet care, and other personal uses.

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Where to buy equipment from or inspiration for how to make your own.


Learn from others, share market research, and access support to reach, maintain, and retain customers.

Business applications

Learn more about how to use biochar for greater impact within business and industry.

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BNNZ acknowledges the generous support of Soil Conditioner Products Ltd, NZ Biochar Ltd, Black Moa Biochar, and Slow Farm Ltd