Since early years of this decade the search for the availability of compounds or molecules that can potentially be derived from natural materials has been carried out. Besides from some traditional examples of such species include cashew nut oil extracts and derivatives for corrosion inhibition (e.g. in polymer coating systems), or ammorhea compounds for fouling mitigation, there is a whole “world” of other unexplored, probably more or the same efficient, compounds and species around, among which we have found 4 types of materials “Camellia sinesis” or Green Tea, “Nicotiana” or Tobacco, Rhizophora and Mimosa plants with their natural chemical contents and advantages that seem to fit the objectives of being used as chemical corrosion inhibitors for Stainless Steel, Carbon Steel and Brass in saline, acidic and alkaline environments. Various results obtained after performing tests, both long and short terms, at room and high temperatures for Green Tea, Tobacco and some early results for Rhizophora and Mimosa are evaluated and discussed in this paper. The new green inhibitor formulations show promise in performing as well as or better than the lab inhibitor under certain conditions.