Interplantings are considered a safeguard for all varieties. The blossoms are attractive to bees. Honey bees are usually necessary for commercial production of highbush blueberries. Full pollination results in higher yields, larger berries, and earlier ripening. Blueberries yield nectar and pollen, but bees visit the flower predominantly for nectar.
Current varieties are self-fruitful but vary in attractiveness to honey bees.
Most modern strawberry varieties are self-fruitful. The anthers that contain pollen circle the receptacle that contains the pistils. Some varieties have tall stamens, so the anthers are close to the stigmas and pollination can occur readily as leaves and flowers are moved by the wind. Additional movement of pollen by bees increases yield only slightly. Other varieties have tall receptacles and short stamens.