Apples to Oregon by Deborah Hopkinson & Nancy Carpenter

More than 7,500 varieties of apples are grown throughout the world. About 2,500 varieties grow in the United States. The apple variety Delicious is the most widely grown in the United States. Apples are part of the Rose family. The science of fruit growing is called pomology. Fresh apples float. That’s because 25 percent of their volume is air. Cut an apple in half, across the core, and you’ll see a star shape. It takes apple trees four to five years to produce their first fruit. It takes about thirty-six apples to make one gallon of apple cider.