The Production of Medicinal Cannabis in Greenhouses is an organic growing manual for medicinal Cannabis in greenhouses. I have taken out all the hearsay, magic and voodoo in the production of medicinal cannabis. All the facts are backed up by peer-reviewed scientific articles. Cannabis is like any other crop. If you are a good farmer, then you will have no problems growing successful crops with this book. The manual provides a solid background in organic growing, pesticides and fertilizers.