Crabapples Look Great But Some Have Black Inside From Center Out

Question From: Santa Cruz, California, United States
Q: My crabapples look lovely, red & ripe. However when I cut them open, several are turning black inside - almost like a bruise from the core out. Other apples are just white interior. However there are no bruises or other marks outside. Any ideas what causes it? Are the crapabbles still ok to use? I've been throwing the worst apples but still use the others in my juice/jelly - no "off" taste or anything. Thanks for your help

A: Sounds like coddling moths. Here's a link for more information on the damage and control of the insect ( The damaged fruit is probably usable for making jelly as it will be heated to a boiling temperature. Best And Happy Yardening, Nancy