To effectively use a commercial picture frame.

A flower holder comprises a holding frame 2, the outer periphery of which is formed in such a manner as to fit to the inner peripheral form of a fitting stepped part 92 formed on the peripheral frame 91 of a picture frame 90 of a standard size, and on which a support member 98 for supporting flowers can be placed, wherein insert groove parts 26, 26... in which tighteners 93, 93... rotatably fitted to plural spots of the back side of the peripheral frame 91 can be inserted are provided on suitable places of the outer peripheral surface of the holding frame 2. With the holding frame 2 installed in the fitting stepped part 92 of the peripheral frame 91, the tighteners 93, 93... are turned so that the tighteners 93, 93... are inserted and locked in the insert groove parts 26, 26... to support and fix the holding frame 2 on the picture frame 90.