Abstract: A plant support and irrigation system for domestic and commercial use is assembled without tools from two principal interlocking components, i.e., tubular members and hubs, to form modules. Modules are joined in mating relation vertically, horizontally and/or at varying angles to construct a variety of useful plant support structures including, for example, A-frames, trellises, arbors and fences and other forms of enclosures. The horizontal and/or vertical components of the modules are optionally perforated tubing making the structures capable of providing low-pressure drip or spray irrigation for the supported plants. The assembly can include connecting members of varying angles, plugs and valved hose connections configured to securely mate with one or both ends of the tubular members.