A vertical tier growing system for plants, the system having at least one vertically tiered shelf section each having one or more arms 87 extending upwardly therefrom and mounted to one or more rails 85, 86 located above the growing system, so that the or each section can be moved along the rail(s), each section having means to provide and direct liquid and lighting to plants growing on said section during use. Each arm may have a roller 88 located at or near its distal end that mounts to the rail. The systems may further comprise one or more floor or ground mounted rails (34 Figure 16) onto which a further roller or set of rollers mounted beneath the section locate. The floor rails may be in vertical alignment with the or each rail above the section.
