In Animal Crossing: New Leaf, you can get the Backyard Gardener badge by planting 100 plants. There are two ways to drop a plant(more specifically a flower) to the ground: by dragging the flower icon to the floor, and by touching the flower icon and selecting plant. Does the first method count as planting, or do I need to manually press plant in the inventory? Because to me, that's basically "tossing" the plant to the ground.
According to an Animal Crossing: New Leaf wiki, the Backyard Gardener badge can only be obtained through planting flower seeds; replanting doesn't count:
Planting flowers taken from the Tropical Island, Villages you have visited and replanting flowers do not count towards your total needed.
(I assume you meant replanting flowers, since drag-and-drop for seeds just drops the packet onto the ground.)