To provide a water receiver intended for holding water in the inside of a pot even without watering flowers or grass in the pot every day through preventing previously given water from causing production of root rot of flowers or grass in the pot.

This water receiver 21 to be put into the inside 15 of a pot 1 comprises a water storage part 13 which forms with a forming wall 12 a recessed part for water storage having a groove-like cross section to bring the center of the water receiver 21 to a space part 26. The water receiver to be attached to the pot is set by putting in the inside 15 of the pot 1.