System for watering plants

A plant watering system (10) including:

• a plurality of containers (12) for containing plant growing medium and plants (20);
• a conduit (16) defining an outlet (18) for, in use, conveying water along the conduit and discharging water via the conduit outlet;
• a regulator (22) for regulating the flow of water along the conduit;
• a scale (14) associated with one of the containers for determining the weight of the associated container;
• a controller (24) that controls the regulator, thereby to vary the flow of water along the conduit in response to the container weight determined by the scale;
• means for moving the conduit outlet across the plurality of containers, in use to provide water to the plurality of containers;
• and
• a database that stores:
• a first predetermined weight associated with zero flow along the conduit;
• a second predetermined weight associated with 100% flow along the conduit;
• and
• at least one intermediate weight associated with flow along the conduit that is between 0% and maximum flow along the conduit,
• characterised in that the controller includes a processor that controls the regulator in response to:
• the weight determined by the scale;
• and the data in the database.