A terracotta cone, which takes over the water supply for all the plants in the house and garden, which you do not want to leave - during a short vacation - without water supply. The hand-formed and low temperature fired cone is worked at the upper end with a round receptacle for bottle screw cap of commercial size. So you poke a few holes in one of these, screw it onto a suitable bottle filled with water and then press it into the recess in the cone. The cone, together with the water bottle, is then inserted into the (previously moistened) soil - some of the water from the bottle steadily drips into the cone until the ceramic material is completely saturated and the moisture is released into the surrounding soil via the porous, water-permeable surface; until a balance is achieved. The drier the soil, the more water runs down; the process always comes to a halt when the soil is sufficiently saturated with moisture. The bottle on the cone can therefore be both a reservoir and a reliable indicator of when watering should be done after all.