Soil fertilisers form the backbone of any system of agricultural production, where nutrients are taken out and used elsewhere: over time, serious depletion of nutrients can occur in soils that are subjected to agricultural labour if these nutrients are not replenished. The traditional solution to this problem has been to bombard the soil with a very basic combination of inorganic chemicals that are considered important for plants fertilizer, with a heavy focus on macronutrients. Our organic soil fertilisers present a different approach to this standard model.