The cultivation plate consists of parallel rows holding pots, and a surrounding rim. The bottom (4-11) of the plate is deeper than the rim (19-26) and has spaced apart transverse grooves (12-18) . The grooves have at least one hole for draining off excess water into a collector system. Adjacent multiple rows of pots are suspended in the grooves and each have an underneath drainage hole. The cultivation plate has grooves (33,34) holding the pots' top rims.
