The ornamental design for a hangingplanter, as shown and described.
FIG. 1 is a perspective view of a hanging planter;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a rear elevation view thereof;
FIG. 4 is a left side elevation view thereof;
FIG. 5 is a right side elevation view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof; and,
FIG. 8 is a perspective view of the hanging planter shown in use.
The broken lines showing the plants of and supporting apparatus for the hanging planter in FIG. 8 depict environmental subject matter that forms no part of the claimed design, while the remaining broken lines shown in the drawings depict portions of the hanging planter that form no part of the claimed design.