The plain growth container is heated by the temperature controlled flexible electrical heating blanket or heating element panel which covers the inside or outside surface of the walls or bottom of the container. The proposed construction allows to maintain the desired warmth of the roots at all stages of the plant development, to promote efficient convective air flow in the plant growing medium, to use DC or AC electric power with optional electromagnetic field cancellation and to use optional antimicrobial additives inside the heating blanket and insulation top cover to prevent mold and disease propagation.
