My neighbor makes his own, collecting brush over the year. He swears by it in his gardens, and it shows results. He had some marigold gardens, one with, and one without. The one with, the marigolds were massive and thriving.
I wonder if you can charge it up with pond nutrients, then put it in your garden? I would assume it becomes an amazing basis for vegetables.
I could easily use the biochar from my silt socks. I'm not sure long to leave them 'working' before swapping out the biochar. The company I used suggested it remains effective for 2 to 3 years, which would be awesome. That same company actually markets their biochar to farmers for soil amendment, and tout it's benefits extensively. I may experiment in my own garden. We have raised boxes, so it would be easy to do a side by side comparison, with the same species of plants.
