FIG. 1 is a perspective view of a garden lamp showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a left side elevational view thereof;
FIG. 5 is a right side elevational view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof;
FIG. 8 is a rear, left perspective view thereof; and,
FIG. 9 is a perspective view of the garden lamp shown without the front cover.
The broken lines in the drawings depict portions of the garden lamp that form no part of the claimed design.