VermiSoils diverse fibrous content stems from Sphagnum Peat Moss, low salt coco coir. We build on that base with our core humic ingredients: VermiWorm (Eisenia fetida worm castings). These fundamental organic materials are also found in VermiBlend and Vermi T Solution. Similar to those products we fortify the mix with kelp and inoculate it with mycorrhizae. Other ingredients include feather meal, blood meal, bone meal and bat guano. There are trigger levels of nutrients for robust starts, while giving the gardener the option to feed out the gate.