A modular, expandable, growing season augmentation system is described. The system can employ multi-purpose, modular panels to create a free-standing, adjustable shelf system that can be enclosed via an adjustable cover. The shelf system is designed to hold a growth medium in which plants can be nurtured. The system is modular so that a given panel can be employed in numerous roles. Further, the system can be expanded or reduced in size by simply attaching or removing panels and cover components. The cover can be adjusted to minimize the wasted space above the top of the growing plants and can be removed as desired. The cover includes access ports allowing access to the plants therein. Manual or automatic vents can be incorporated in the cover. The cover is supported by an adjustable and removable support structure that can be configured to hold grow lights and/or heating elements.
