Fuente: WIPO "tomato" A plant support structure (e.g., a grow tower) comprises a spine and grow sites (e.g., pots) coupled to the spine. Each grow site may be configured to hold a root mass of a plant, such as a micro dwarf tomato. Each grow site may be disposed above another grow site. A ratio of a width of the spine to a width of the grow sites may be less than 1.0. A harvesting system may comprise multiple plant support structures, and a superstructure from which the structures are suspended and conveyed along a grow line to a harvesting site.