Apparatus for use in watering a plurality of plants and subjecting them to the same level of light so that they mature at the same time comprises a number of cables (26) arranged in endless loops (24) disposed horizontally and elevated in a greenhouse (23). A watering station (28) having water actuating means (78) is present adjacent each loop (24). Hangers (38, 38a) each having a hook (50, 50a) to receive a plant pot (25) and a contact portion (40) are spaced apart along the cable (26). When a plant pot (52) is on the hook (50, 50a), the contact portion (40) is caused to actuate the acuator (78) to water the plant (25) (Figures 1 and 6).
