Abstract: The disclosure is directed to a flower pot holder consisting of a base element secured to a vertical support surface, and a clamping member which is vertically adjustable relative thereto and held in a desired, fixed position by the mounting screw. The base element comprises a first abutment extending laterally from the base, and which cooperates with the clamping member to define a retaining enclosure for the stepped collar of a clay flower pot. A second abutment is vertically spaced below the first abutment and also extends laterally outward from the base element. The first and second abutments are disposed to offer lateral support to the frustoconical wall of the flower pot, while the first abutment underlies the stepped flower pot collar. An accessory is interlockably and releasably mounted to the base element to support a shallow tray having an upturned peripheral side wall that may also be retained by the clamping member. A flower pot may supportably rest in the shallow tray.