Welcome to the world of geological agriculture. Your first step in alternative agriculture 2.0; gravel gardening. This guide will outline the steps necessary to incorporate gravel gardening techniques and practices into your home and growing environments. You will learn 1) the basics and the science behind gravel based agriculture, 2) materials required, and 3) various applications and management techniques. Once you lay your gravel garden correctly, you should not have to change nor replace your gravel for many years, while producing crops annually. Geological Agriculture is the process of growing plants, vegetables and flowers in an all rock or gravel environment. Also known as geo-agriculture or gravel gardening, this method of cultivating crops enables vegetation to occur and sustain itself with limited to no use of soil and fertilizers. This years' 6th edition includes academic contributions from George Washington University (GWU) and Tennessee State University (TSU). Professors at GWU examined geological characteristics, while professors and students at TSU assessed baseline agriculture aspects of geological agriculture. Combined, these studies begin to shape the academic building blocks of this new science. New to this edition is the business of gravel section which outlines 17 business sub industries of geological agriculture. This edition includes a 40-page gravel gardening gallery of the past few years along with the geological agriculture glossary of terms, which introduces a variety of new terms to describe the process of the rock based crop sustainment.