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NW Washington | Biochar and wood ashes are two different things. Biochar is similar to charcoal briquettes used in a BBQ, and wood ashes have most of the carbon burned out of them. Wood ashes have some fertilizer value, like potassium. https://www.rit.edu/sustainabilityinstitute/blog/what-biochar-and-ho...
"Biochar is a charcoal-like substance produced by heating organic biomass, such as wood or crop residue, in a low-oxygen environment through a process called pyrolysis. It is used as a soil amendment to improve soil health and as a way to sequester carbon by converting it into a stable, long-lasting form that resists decomposition. Biochar's porous structure and high surface area allow it to retain nutrients and water, supporting beneficial soil microbes. "
"Yes, wood ashes are good fertilizer in moderation, providing essential potassium, phosphorus, calcium, and micronutrients, and helping to raise acidic soil pH (acting like lime), but only if they come from clean, untreated wood and are used sparingly to avoid making soil too alkaline, which harms most plants. Test your soil first, use only hardwood ashes, and never burn treated wood, cardboard, or trash; apply lightly or mix into compost. " | |
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Bio-char?
