Abstract: A root control and containment system for holding and growing a plant in a cavity in the earth for controlling and containing vertical and horizontal root growth is disclosed. The system includes a vessel having upstanding sidewalls and a base therebelow and an open top thereabove. A root inhibiting carbon bound material is in chemical communication with the vessel and stores and releases the root inhibiting carbon bound materials over protracted periods of time. The root inhibiting carbon bound material is disposed in a discrete pattern relationship on an inner surface of the sidewalls and the base. The controlled release of the carbon bound material rejects lateral root growth therethrough the wall and vertical root growth therethrough the base of the vessel. An arcuate collar is attached to an upper edge of the sidewall of the vessel and is disposed above the surface of the earth surrounding the cavity for rapid identification of the cavity by field personnel when performing field tasks.