What Are These?

bikerdoc5968 Z6 SE MIOctober 3, 2013

This year my very old oak had not produced any acorns. I know acorn production varies year over year, but this year NOT ONE! Instead, these fury little irregular balls are falling in huge numbers on a daily basis. They are green inside and soft. What are they? Some kind of insect infestation... I can't believe they are aborted acorns.

Thank you for reporting this comment. Undo
rhizo_1 (North AL) zone 7

Those are a type of leaf gall called a fuzzy oak gall. This gall is caused by a teensy wasp...the wasp larva develops inside the gall, feeding on it as it grows into an adult wasp.

These galls are not considered at all harmful to the tree.

    Bookmark   October 3, 2013 at 1:41PM
Sign Up to comment
More Discussions
atrazine
I am not a novice gardener, and yesterday I applied...
nancy1648
Question for the 'Regular' contributors
I've noticed a real slow down in this forum since the...
rhizo_1 (North AL) zone 7
Getting rid of soil nematodes
Dear veggie lovers: This is my first season growing...
diane_zn7a_albqnm_5500ft
Weeding raised beds!
My husband was being treated for cancer last fall and...
jpc57
Black/brown dots on basil, diamond-shaped bugs
Hello, So, something has been injuring my basil plant....
yotekai
© 2015 Houzz Inc. Houzz® The new way to design your home™