A device for wine or fruit growing, having at least one metallic trellis post and having at least one, in particular metallic, profile piece, which is fastened to the trellis post and has at least one holding element for a tensioning wire. In order to facilitate handling of the device and to increase its stability, the invention proposes providing a closed rectilinear guide between the trellis post and the profile piece, of which guide the trellis post forms, on the longitudinal side, a rail-like guide element on which the profile piece is guided in sliding fashion, and providing an open snap connection of which the profile piece has a spring element that engages with the trellis post M detent fashion.