The present invention relates to a support device (1) for hydroponic culturesformed of apanel made of polymeric material comprising a plurality of separate anddistinct hollowtubular elements (2) arranged side-by-side and spaced apart in parallel so asto createa plurality of seats (20) suitable to contain an inert substrate forhydroponic cultures,each defined between two adjacent tubular elements (2) and extending betweenanupper opening (21) and a lower opening (22). In particular, said tubularelements (2)each have a shaped cross-section, defined by a curved top portion (2A) and apair offlat and inclined side walls (2B) extending symmetrically with respect to avertical axis(X-X) and diverging towards the outside, such that said seats (20) have asubstantially"funnel-shaped" section.
