Abstract: A plant tray (10) having a plurality of cups (14) in a flat sheet (12) of moldable material wherein the cups are in parallel rows (1-7) with at least some of the rows (2,4,6) having spaces (24) between some of the cups (14) for air openings (26) in the flat sheet (12) to supply air to the foliage of plants growing in the cups (14). The cups (14) in adjacent rows may be offset and have a variable width shape such as a hexagon to provide a maximum number of cups in the available space and which are located close to the air openings (26). The cups (14) of hexagonal cross section also have corners (46) for directing the root growth of the plants. The sidewalls (38) of adjacent cups (14) surrounding the air openings (26) form funnels (43) for improved air drainage.