Black Owl Biochar

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Black Owl Premium Organic Biochar (B.O.B) is a high-quality product sourced from Biochar Supreme, a local producer in WA who create their Biochar by pyrolyzing* 100% clean, unprocessed virgin wood waste from sustainably managed forests. OMRI-Listed and Organic Approved.

B.O.B is produced specifically with the grower in mind with its capacity to improve soil structure and fertility, help with water retention and drainage and as a magnet for heavy metals and other water impurities.  Major research centers and top institutions have confirmed the benefits of Biochar and our own research trials have shown an 8-9% increase in growth and yields using our KiS Biochar Soil vs our Water-Only Soil.

B.O.B has positively charged ions that attract fertilizers and nutrient minerals such as Nitrogen, Potassium and Phosphorus. This attractiveness (called "cation exchange capacity" or CEC) keeps nutrients in the plant root zone, preventing them from leaching out with watering. CEC also helps make the nutrients bioavailable to the plants. Ultimately, with Black Owl Biochar in your soil, you need less fertilizer or compost for the same results. Along with your crops, you'll harvest savings in fertilizer costs, year after year. With a well-made Biochar in your soil, you will water less often and also save costs associated with both water and labor.

*Pyrolyzing means ‘decomposition with heat’ and is as simple as baking biomass in an oven in the absence of oxygen.  Higher temperature pyrolysis produces Biochar with higher surface area, which helps to lock away harmful contaminates like heavy metals and sequesters carbon from the atmosphere.  The baking process releases flammable gasses that provide heat energy- in essence producing an amazing soil amendment that stores stable carbon in the soil while producing clean, emissions-free energy for the Washington State energy grid.


The Biochar should ideally be placed near the soil’s surface in the root zone, where the bulk of nutrient cycling and uptake by plants takes place.  In cases of new landscaping or construction areas, deeper placement is preferable. The likelihood of wind erosion is significantly reduced when pre-mixed with compost, watered down and thoroughly incorporated into the soil.  Biochar can also be mixed with liquid manures and applied as a slurry. 

For specific application rates of Biochar from Biochar Supreme, click here

If creating your own soil mix we recommend 5%-8% of your total media to maximize soil benefits.  In field soils we can see application rates at 2%-3% with benefits.

Our Commercial Grower’s Mix (CGM) soil contains 5% biochar by volume and our biochar soil mix contains 8% biochar by volume.


Free shipping in Continental USA only.  Does not include Alaska, American Samoa, Micronesia, Guam, Hawaii, Marshall Islands, Northern Mariana Islands, Palau, Puerto Rico, US Virgin Islands, Armed Forces Americas, Armed Forces Europe or Armed Forces Pacific.


Bulk orders of Black Owl Biochar come in 2 yard totes. Please note that to have this repackaged into 1 yard totes there will be an additional fee added to the order.  Please contact us directly for a freight quote or pick up options in WA.


Cannabis Cultivation & Science Podcast: Episode 14 - All About Biochar with Renel Anderson

Cannabis Cultivation & Science Podcast: Episode 78 - Benefits and Uses for Biochar with Tom Miles

7 Important Things When Building a Living Soil

The Economics of 'Water Only' Soils

A Comparison of Living Soil Methodologies in Relation to Plant Health and Yield in a Controlled Environment for Cannabis

A Cost Analysis of KiS Organics Soil Over A 3 Year Period

Customer Reviews

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Customer Reviews
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Don O.
United States

Black gold

Great stuff, delivered quickly. Be sure to listen to the podcast at KIS Organics on this addition to your soil.

Damir H.
United States United States

Fired up!

I’ve never used Biochar but this stuff looks top shelf. Im top dressing + additional water in like teas. Kis is the shiznet in my book.

Donald G.
United States United States

Love KIS

Honestly, haven't been able to full test it yet, but I love this company and what they stand for. So,I have complete faith it'll turn out awesome. Learned so much from the great podcast, I feel like I owe it to Tad to buy his But seriously great company, **** of a producer of quality information, as well.

United States United States

Black owl biochar

Wonderful product and fast shipping

United States United States

Great Service

Great help getting quality products at a good price