According to an aspect of the invention there is provided a soilless system for high density plant growth said system including a greenhouse type structure at least one elongate support member arranged substantially vertically in the greenhouse type structure the support member having 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 being in flow communication with the flow channel a fluid supply system in fluid communication with the flow channel for supplying a fluid stream to the said flow channel and a fluid collection system for collecting residual fluid which has flowed through the flow channel.
