The invention relates to a system for the centralised, remote management of the watering of large areas, such as city parks and gardens, consisting of : a watering management server computer (1) including a device (11) for connecting to a global access communication network (4) for the remote management thereof, a mobile or landline telephone access device (13) and a remote service device (13) a series of communication hubs (2) comprising a mobile or landline telephone access device (21), a watering program storage memory (23) and microprocessor (22), a radio frenquency apparatus (24) for communicating with watering devices (3) and an electric power source (25) and a plurality of watering devices (3) including a radio frequency communication module (33) enabling remote activation, programming and status querying from a nearby hub and a self-contained power source.