Plant growth system with collapsible rib structure

A living plant growth support system for controlled growth of plants under ambient conditions which may differ substantially from ideal, comprising:

• one or more a plant growth assemblies, each plant growth assembly comprising:
• a root bag having an enclosing material;
• a rooting substrate disposed within said root bag for supporting a growing plant;
• plant receiving zones disposed within said root bag in abutment with said rooting substrate, for receiving viable growing plant material in the form of seeds therein;
• a collapsible foliage bag provided to mate with said root bag, said root bag having stem portals which provide access from said root bag to the interior of the foliage bag, the foliage bag being inflatable such that the interior thereof provides an interior volume within which foliage of the plants may grow, said foliage bag having an enclosing foliage bag material and a plurality of flexible support members such that said foliage bag maintains said interior volume when the interior air pressure is less than external air pressure;
• and
• said plant receiving zones, each include a seed cavity adjacent to one of said stem portals, each seed cavity including a seed retaining means for supporting and retaining the seed and moisture delivered thereto, so as to facilitate germination and early growth of the seed and for urging the plant emerging therefrom to grow through the stem portal, said seed retaining means, said seed cavity and said stem portal cooperating to form an air-tight and water-tight seal between said root bag and said interior of said foliage bag through all stages of plant growth and development.