FIELD: agriculture.SUBSTANCE: invention relates to the field of groundless plant cultivation. Device comprises plurality of elements (41) with a fluid passage through which the supply fluid passes through, with through holes (41a–41c) on their upper surface. Movement mechanisms (13–15) move a plurality of elements (41) to the fluid channels, such that the distance between two adjacent elements (41) of the plurality of elements (41) becomes variable. On the nutrient medium for seedlings plant seeds are located. Areas for retaining nutrient medium (51a–51c) are cylindrical in shape and contain the nutrient medium for seedling (44) to retain it. Sections (51a–51c) are inserted into through-holes (41a–41c) of the plurality of elements (41) or are in communication with through-holes (41a–41c) of plurality of elements (41) and absorb the nutrient fluid into seedling medium (44). First plate portion (52) is located on the upper side of elements (41), is plate-shaped and extends in the direction of moveme
