Experts and BHG readers answer.
Why Are My Asian Pears Losing So Many Immature Pears This Year
We live in Seattle & have 2 varieties of asian pear trees (1 each), 20-25 years old. All the pears appear healthy yet a large amount of the immature fruit (1/2” sized) fall each day. The trees have always been kept organic. All I use are sticky traps to catch insects. What would cause the trees to lose so many pears? (Note this has been a wet and cool spring).
It sounds as though your Asian pears were poorly pollinated. Cool, wet weather could have prevented pollinators such as bees from being active. If a blossom doesn't get pollinated, it can begin to develop into a fruit, but drops when it reaches the size that you're describing because it has no seeds inside which produce the growth hormones needed for continued fruit development.