An automatic self-watering system for plants growing in a container includes a water receptacle above the level of growing medium in the container. The water container may be of any appropriate shape, and may be attached to or located adjacent an upper edge of the container. Alternatively, the water...http://www.google.fr/patents/US5097626?utm_source=gb-gplus-shareBrevet US5097626 - Automatic self-watering system for plants growing in a container
Automatic self-watering system for plants growing in a container