The Japanese apple known as Fuji took the United States by storm in the 1980s. Fuji apples are typically large or very large and round, on average the size of a baseball. They contain between 9-11% sugars by weight and have a dense flesh that is sweeter and crispier than many other apple varieties, making them popular with consumers around the world. With refrigeration, Fuji apples can last up to 5-6 months.