Biochar for  soil health

Made in California, from local walnut shells.

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Science and happy dirt



Soil supports all the life on on earth. New topsoil can take a thousand years to form.

Biochar helps the soil in bringing new surface area, organic matter and structure to the soil. It will hold nutrients and water in place. A gram of our biochar has the surface area of over 250 square feet! This is highly beneficial for the “microbiome” of the soil: those billions of bacteria and other living organisms.  

We’re putting the science to the test with university researchers, tree nurseries and curious land managers (mainly in CA for now). Leave a note or email to join. 

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In a nutshell 

Biochar enhances soil fertility by retaining nutrients, water and providing a growth platform for good microbes. 

We focus entirely on making an excellent, pure biochar (~85% fixed Carbon content). We don’t sell anything else. We don’t use additives or chemical treatment aka no bad things.

Our customers are campuses, cities, urban areas and farms. Not just because we make the soils healthier in the long term - but especially because biochar helps the plants be more resilient to environmental stressors.

California creates millions of tons of agricultural residues yearly. We use orchard waste and up cycle it into biochar.

Our production is efficient and local - the nut shells travel less than 50 miles from where they grew.


Every ton of CC biochar takes down three tons of CO2.

Increasing the soil carbon content helps the microscopic life that keep our soil alive. #Soilmicrobiome #CarboCulture

Culturing Carbon


We think that carbon should be taken down from the atmosphere and put to work where it is useful.

Our ultra efficient process technology has been developed for a decade in the university labs at the Hawaii Natural Energy Institute. Now it's time for a broader audience in this teenage technology's life!

Clean the air - heal the earth.

The nutcases 

California native and part Norwegian Chris knows that nature has most of the answers for bioengineering already.  Henrietta is from Finland, land of sisu (meaning "grit, perseverance").  Her last name Kekäläinen means burning ember.  

Dissatisfied with the status quo, the founders decided to bring the science to the next level.

Nordic heart, Californian start!