The invention relates to a modular trough growing device, in particular hydroponic, comprising a trough (12), with length L, considered along a longitudinal axis XX', with a closed section, with an upper face (12-1) with a U-shaped section, intended to receive a light growing substrate (14), the lower face of the light substrate (14) resting 5 on the bottom (12-2) of this U-shaped section, said bottom (12-2) including at least one depression (12-3) so as to allow air to circulate below the substrate. Figure 1 8601304 1 (GHMatters) P104991.AU 16-2 ~； ~~416-6 16-16-5 40-3 16-3 --- 12-3 30-3 Fig. 3
