- applestar
- Mod
- Posts: 30624
- Joined: Thu May 01, 2008 7:21 pm
- Location: Zone 6, NJ (3/M)4/E ~ 10/M(11/B)
This is a cedar apple rust gall -- usually galls like this is caused by a insect laying an egg inside, but in this case, it's a disease
https://bugguide.net/node/view/212180/bgimage
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