Asian pear tree pests

Asked March 6, 2020, 5:11 PM EST

Last year my asian pears have black spots on the outside and something bores into the core and leaves a black trail. this ruins the fruit. Also many of the tree leaves turn black later in the year. What pest causes this and what course of action do I take?

Washington County Oregon

1 Response

Thank you for your question. We can be more accurate in diagnosing problems if we have either photos, or a chance to examine the plant (in this case, the fruit). But from your description, your pear tree(s) have coddling moths, described here: Since they overwinter in dead leaves, fruit and the soil, prevention—by removing as much as possible in the fall—may reduce pest populations. I trust the article answers the current ‘what to do’ question. You can bring infected fruit to an Extension office ( to confirm the pest if you are uncertain. Good luck!