Manila landscaping rope (natural and synthetic, also known as UnManila or ProManila) is specified mostly in diameters 1″, 1 1/4″, 1 1/2″, and 2″. It’s used for example, in fencing, and as decorative railings on decks and back yard bridges. Sometimes it’s just a matter of stringing some rope through holes drilled in posts to create a great looking border or fence.
Or you can just wrap some rope around a couple of posts for no particular reason and it looks great.
So landscape contractors and designers make use good of natural and synthetic fiber rope and twines as design elements.