The ornamental design for a gardentoolhead, as shown and described.
FIG. 1 is a front elevational view of a garden tool head showing my new
design;
FIG. 2 is a right side elevational view thereof, the undisclosed left side
being a mirror image of that shown; and
FIG. 3 is a rear elevational view thereof. The broken-line disclosure of a
portion of the handle shown in the views is for illustrative purposes only
and forms no part of the claimed design.