It doesn't mention tobacco or jicama, both powerful insecticides (the latter has been taken off the USDA organic list, oddly
enough, even though it's pretty easy to grow organically), and doesn't mention plant sources for herbicides like ailanthus.
I like it, though! It's a good format, and has a lot of useful info.
"the qualities of these bacteria, like the heat of the sun, electricity, or the qualities of metals, are part of the storehouse of knowledge of all men. They are manifestations of the laws of nature, free to all men and reserved exclusively to none." SCOTUS, Funk Bros. Seed Co. v. Kale Inoculant Co.