In one aspect, a method for creating merged triple windrows within a field may include performing a first cutting pass across a first triple windrow set of the field in a first harvesting direction so as to sever materials from the ground and deposit the severed materials within a first cut strip to form a first deposit of severed materials. The method may also include performing a second cutting pass across a second triple windrow set of the field subsequent to the first cutting pass in a second harvesting direction opposite the first harvesting direction so as to sever materials from the ground and deposit the severed materials within a second cut strip to form a first separate deposit of severed materials. Moreover, the method may include performing subsequent cutting passes across the first triple windrow set to create a merged triple windrow within the first cut strip.