In order for fruit to develop, pollination must occur at blossom time. Pollination is the transfer of pollen from the male part of the flower to the female part of the flower. Some types of fruit trees may be pollinated with their own pollen and are considered self-fruitful or self-pollinating. Other types of trees require pollen from a different variety of the same type of tree and are considered self-unfruitful or self-incompatible. The transfer of pollen from one variety to a different variety of the same type of tree is called cross- pollination. Cross-pollination is essential for apples, pears, most sweet cherries, and most Japanese plums. Cross-pollination is not essential, but does improve the number of fruit that form on apricots, European plums/prunes, tart cherries, peaches and nectarines.
Pollen is primarily transferred by honeybees. Trees placed more than 100 feet away may result in poor pollination. Bees work best when temperatures are above 65oF. Cool weather, rain or winds may prevent bees from leaving their hives. Most pesticides are toxic to bees and should not be used during bloom time. For more about honey bee pollination in orchards, including placement, numbers of hives, ways to enhance bee habitat and pesticide effects on honey bees visit our page on Honey bees.
- Apple Pollinizer Information
- Pear Pollinizer Information
- Cherry Pollinizer Information