The Green belt is a good example of what happens in a border zone when the nature is left alone without any disturbance from human activity. What happens is determined by the species' inner potentialities and the living conditions in the belt. The same can be said about development of any organism in general. It is not the potentiality within the organism that determines the result, but the interaction between the potentiality in the organism and the environment. This article will try to show how research on two so different topics as epigenetics and practical knowledge / borderology can benefit from each other's results. Both focus on the condition for interaction in their specific type of border zone.