Japan has a temperate climate zone, and relatively warmer parts of the country are called subtropical zones. The 38th parallel north latitude is said to be the boundary between these two zones. Since Sado Island is located right along the 38th parallel, both temperate and warm-temperate plants and trees can be found growing on the island. This also makes it possible to grow apples, a temperate zone tree. Apples grow well when exposed to low temperatures during budding. They need fertile soil with good exposure to the sun to grow. The terraces in Nishimikawa and other areas on Sado Island are highly suitable for apple cultivation.

Sado apples are typically grown without bagging, and harvested after they are fully ripened in direct sunlight. They have a moderate sugar content. Various varieties of apples are cultivated on Sado, including “Fuji,” “Akibae,” “Shinano Gold,” and “O-Rin.” Each variety of apple has its own unique tastes and texture. About 60% of the apples grown in Niigata Prefecture are cultivated on Sado Island.