This is fantastic and thank you for taking time to document and post pictures!

It appears different sources of biological material have a different purpose. The webpage you listed above suggests manure turned into biochar may be more suitable for providing healthy bacteria rather than sequestering phosphorous?

Other potential sources for biochar are: corn stalks, hulls, oats, wood chips, manure, hemp, nut shells, etc.

Do they tell you what source they used in the bag you picked up? It would seem that might be something useful to know if you ever pick up any more.

Last edited by canyoncreek; 05/30/25 08:54 PM.