The ornamental design for a horticulture grow light, as shown and described.
FIG. 1 is a perspective view of a horticulture grow light, as viewed from above, showing my new design;
FIG. 2 is a perspective view of the horticulture grow light shown in FIG. 1, as viewed from below;
FIG. 3 is a left side elevation view of the horticulture grow light shown in FIG. 1;
FIG. 4 is a right side elevation view of the horticulture grow light shown in FIG. 1;
FIG. 5 is a front elevation view of the horticulture grow light shown in FIG. 1;
FIG. 6 is a rear elevation view of the horticulture grow light shown in FIG. 1;
FIG. 7 is a top plan view of the horticulture grow light shown in FIG. 1; and,
FIG. 8 is a bottom plan view of the horticulture grow light shown in FIG. 1.
The broken-line disclosure shown in the views is understood to represent portions of the article in which the claimed design is embodied, but which form no part of the claimed design.