Richard Hentschel, host of Green Side Up begins a series of shows on home orchards starting with a discussion on pollentaion. Most apples will need to be cross pollentaion as do pears and some plums. Other fruit trees are considered partially self fruitful. those tres prefer to be cross pollentated, yet will accept thier own pollen. The third type will be self fruitful. Those trees will be able to use their own pollen to create fruits.