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Black Owl Biochar Soil Amendment

4.8 out of 5 Read 31 reviews
$ 2600
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Reusing your soil? Get a soil test with analysis and add only the amendments your soil is actually missing. Learn about soil test analysis or take our quick quiz.

Black Owl Premium Biochar is made in Washington by Biochar Supreme from 100% clean, unprocessed wood waste from sustainably managed forests. It is OMRI Listed.

Key things we want you to know

  • Mix rate: 5% to 8% of total soil media, or 2% to 3% in field soil.
  • Best placement: near the surface in the root zone, pre-mixed with compost and watered in.
  • Shipping: free in the continental USA. Yard totes are ordered by phone.
  • Certified: OMRI Listed.

Benefits & Features

Key Product Highlights

  • Improves soil structure and fertility, water retention and drainage
  • Positively charged surfaces attract nutrients such as nitrogen, potassium and phosphorus, a property called cation exchange capacity (CEC). This helps hold nutrients in the root zone so they are less likely to leach with watering.
  • Our own research trials showed an 8-9% increase in growth and yields using our KiS Biochar Soil versus our Water-Only Soil
  • Made from 100% virgin wood waste from sustainably managed forests
  • Peat free

How Biochar Is Made

Pyrolysis means decomposition with heat, much like baking biomass in an oven without oxygen. Higher temperature pyrolysis produces biochar with a higher surface area and stores stable carbon in the soil. The process releases flammable gases that are used as heat energy for the Washington State energy grid.

Application & Mixing

Place biochar near the surface of the soil in the root zone, where most nutrient cycling and uptake takes place. For new landscaping or construction areas, deeper placement is preferable. The likelihood of wind erosion is significantly reduced when biochar is pre-mixed with compost, watered down and thoroughly incorporated into the soil. It can also be mixed with liquid manures and applied as a slurry.

If you are creating your own soil mix, we recommend 5% to 8% of your total media. In field soils, application rates of 2% to 3% show benefits. Our Commercial Grower's Mix contains 5% biochar by volume and our Biochar Soil Mix contains 8% by volume.

For specific application rates from Biochar Supreme, see their application guide.

Sizes, Shipping & Bulk

Free shipping in the continental USA only. This 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 come in 2 yard totes. Repackaging into 1 yard totes carries an additional fee. Please contact us at (425) 558-0990 for a freight quote or pickup options in Washington.

Lab Reports & Resources

Lab Reports & Resources

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Reviews (31)

Customer Reviews

Based on 31 reviews
90%
(28)
3%
(1)
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(1)
0%
(0)
3%
(1)
100.0
100.0
D
Doug Petsinger
Good first results

My first results with the biochar, fungal compost and the ocean prime compost were mixed and added to shredded alfalfa for top dressing.

R
Ryen
Hold them close!

In a world where companies spread so much misinformation, have subpar customer service, and offer low quality products, Kis Organics is such a breath of fresh air.

It’s crystal clear how much thought and care goes into each one of their products. Not to mention every product I’ve received is of the highest quality! Keep up the good work, it will pay off 👍.

A
Anonymous
Looks good so far

I like the attention to detail for this product and being OMRI and the quality looks good. I am running experiments next for microbial insulation. So far so good.

J
James Grime

Is biochar

A
Alan Magan

Great product, great service... and I'm on the East Coast!

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