According to an aspect of the invention, there is provided a soilless system for high density plant growth. The system includes a greenhouse structure and at least one elongate support member of wave shaped form arranged substantially vertically in the greenhouse structure. The elongate support member has a body having a flow channel defined therein, and a plurality of vertically spaced apart receptacles angularly disposed to the vertical axis of the body for receiving a plant therein. The receptacles are in flow communication with the flow channel. A fluid supply system is in fluid communication with the flow channel for supplying a fluid stream to the flow channel. A fluid collection system collects residual fluid which has flowed through the flow channel. The elongate support member also includes a passage in fluid communication with the receptacle for introducing temperature and/or oxygen regulated air to the root zone of a seedling contained therein. The soilless system contributes to resolving issues with supply of nutrients to roots of plants, exposure to light and plant density that occur in known high density farming methods in greenhouses, such as hydroponics.
