|This variety bears medium tapering fruit striped or solid red with some yellowing. The flesh is juicy and sweet. This is the most widely grown apple in the world. There are varieties of apples suitable for almost all of the climate zones in the United States. They prefer cold winters, moderate summer and high humidity. Apples are deciduous and must be pollinated in order to produce fruit. Apple trees should be pruned in summer and winter. Codling Mothes are one of the most serious apple pests.