A liner for use in a horticultural planter contains an integral water tray which is located between inner and outer fibrous layers of a liner. The water tray extends from a bottom surface of the liner to a peripheral top edge. The water tray is integral with the liner and located between outer and inner fibrous layers. The water tray extends also from the bottom surface to a peripheral edge which is spaced apart from the peripheral top edge of the liner. An overflow region is therefore formed between the peripheral top edge of the liner and the peripheral edge of the water tray.