To provide an inexpensive container capable of refilled with water with a plant such as a cut flower arranged therein, eliminating liquid leakage, having a conveniently portable size and being usable as an accessary.

This water retaining container includes a container for storing liquid mainly consisting of water, a mouth part sealing means for liquid-tightly sealing a mouth of the container with a stem of the plant inserted into the opening part of the container, and a cap having an opening portion for inserting the stem and fixing the mouth sealing means to the container, wherein the mouth part sealing means is formed by stacking a plurality of elastic members, the member has at least three cuts radially from the center, and the directions of the cuts are alternately disposed.