An hydroponic plant production apparatus for allowing vertical hydroponic greenhouse crop production is provided. The apparatus comprises a hollow grow tube (12) having a front face, a back face, an open first end (14), and an open second end (16). A slot (20) is formed in the front face of the grow tube. A media material is insertable into the grow tube. The grow tube is positionable in either a horizontal position, vertical position, or any position between the horizontal position and the vertical position allowing inclined, multi-angled crop production and multi-storied conveyor style crop production.