The subject of the invention is a method and devices for continuous irrigation by means of bleed-out pipes. An installation according to the invention comprises bleed-out pipes 1 which are placed between rows of plants and which are connected to a collector 2. A calibrated nozzle 3, chosen from a set of nozzles having a flow rate under a given load, which corresponds to the length of the pipes and to the specified needs of the crop, are placed at the upstream end of each pipe 1. The collector 2 is fed by an open tank 8 which is supplied by a tap 9 with a ball cock 10. The tank 8 is mounted so as to slide on a support and the height of the tank is varied periodically in order to adjust the flow rate of the pipes to the seasonal conditions. One application is the continuous irrigation of market garden, fruit, flower crops, etc. <IMAGE>
