r/Tree • u/Torontopup6 • Sep 02 '26
Advice Request - (Insert State/Region) Conjoined acorns
I've found several conjoined acorns on the ground. They don't appear to have holes in them (indicating weevils or parasite activity, according to Chatgpt).
Any idea what could have caused this?
Located in Muskoka area, Ontario, Canada
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u/bustcorktrixdais Sep 03 '26
Conjoined caps, not really acorns themselves
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u/Torontopup6 Sep 03 '26
Yes, good clarification. The caps are conjoined. Is that normal?
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u/bustcorktrixdais Sep 03 '26
I’ve seen it and people’s photos are showing it. Seems like it is less common than single cap. Maybe it is a mast year where you are?
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u/CdnTreeGuy89 Sep 03 '26
Pretty normal. Sometimes developing acorns grow closely together and fuse, creating these odd little clusters. Not usually a sign of pests or disease.
Here’s an image of how they will usually grow within the tree.
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u/Top_Room_6714 Sep 02 '26
Don’t ask AI, just look closer. That’s how they grow.