You can use rock glue for gravel landscaping since it is specially designed to work on rocks and gravel, but there are many alternatives you can try, such as mulch glue, epoxy, or a gravel grid.

It works for materials like pine needles and shredded wood mulch. You also can use mulch glue on landscaping rocks, gravel, and pebbles. You can purchase a 32-ounce bottle of Petramax mulch ...