[Task] The objects of the present invention are to provide: a polyvinyl alcohol (PVA) film for plant cultivation which is capable of suppressing root penetration while exhibiting excellent nutrient permeability； a method for producing the same； and a method for plant cultivation using the same.[Means to Achieve the Task] The present invention is directed to a PVA film for plant cultivation, wherein a thicknesswise-directional average value of birefringence in a machine direction of the film is from 4.0×10−3 to 12.0×10−3 and a swelling degree of the film is from 150 to 180%； a method for producing a PVA film for plant cultivation, which comprises a step in which a PVA film having a moisture content of from 5 to 20% by mass is stretched in the ratio of from 1.3 to 1.7 times and a step in which the stretched film is heat-treated at a temperature in the range of from 130 to 170° C.； and a method for plant cultivation, which comprises cultivating the plant in the manner in which the plant and the PVA film for plant cultivation described above are directly contacted.
