Making Biochar to Improve Soil

By making biochar from brush and other hard to compost organic material, you can improve soil — it enhances nutrient availability and also enables soil to retain nutrients longer.

One of two winter squash beds on the slope is an experimental biochar bed. After digging out a 10-inch deep 2x6-foot wide trench, we filled it with seed-bearing weeds, brambles, and other materials we didn't want in the compost.