Abstract: A portable, collapsible flagstaff suitable for use to support a practice golf flag is disclosed, wherein the flagstaff comprises at least an upper, middle and bottom segment which are detachably connected to one another; a weighted cylindrical base at the foot of the bottom segment; a spike projecting from the bottom of the base for anchoring the flagstaff in the ground; and a cylindrical cavity in the base in which the spike can be stowed when the flagstaff is in the storage configuration. Also disclosed is a storage configuration wherein the middle and upper segments of the flagstaff are mounted on a bottom keeper plate resting upon the top of the base, and all of the segments are secured together at their upper termini by a top keeper plate or by a 3- or 4-tube top keeper element, and the spike is stowed in an inverted position within the cavity in the base. An elongated "D"-shaped flat-mounting bracket is shown whereby a flag can be pivotably mounted upon the upper segment of the erect flagstaff.