<P>PROBLEM TO BE SOLVED: To provide an automatically watering planter light in weight, causing no root rot and usable also for rooftop greening. ??<P>SOLUTION: The automatically watering planter is structured as follows: forming a small stone storage part 7 in a planter body 1; spreading small stones 8 in the housing part; charging soil 26 in the planter body 1; and planting plants 27 in the soil. In an automatically watering device 18, a water supply port is closed via springs when no load is applied, a water stopper is opened when inversely setting a water container 13 on a water supply saucer 10 to supply water into the water supply saucer 10; the water in the water supply saucer 10 is supplied to the small stone storage part 7 from a supply hole 12 and retained among the small stones 8; such water retention results in that the soil 26 is infiltrated with the water content and the plants 27 absorb the water content through their roots. ??<P>COPYRIGHT: (C)2010,JPO&INPIT ??