Plastic Trays are used for a wide range of applications in your greenhouse and garden. Watertight trays can be used as a water reservoir for pots and seed trays, so a large number of plants can be watered in minimal time - ideally line the trays with water matting, sand or gravel, as plants don't like to have their roots constantly sat in water. We have trays that are large enough to accommodate a full sized grow bag - considerably reducing the frequency of watering required. We have plastic trays that are the perfect size for standing on greenhouse benching where they can be used to retain water for quick and easy watering. Plastic trays can also be used to retain compost when potting up - in fact we use our largest plastic tray - the Titan Tray - to form the surface for our Professional Potting Bench.