What is this seed?

Asked October 1, 2015, 3:12 PM EDT

I'm trying to determine the source of this seed. There are over 1,000 in my yard, but I cannot find it on any plant or tree. I have looked in a number of books and online guides without any luck. Any thoughts?

Hennepin County Minnesota

1 Response

The objects in the photo are wooly oak galls. The galls grow on the leaves of oak trees. There has been an abundance of these galls this year, many of which are falling now. A number of people have asked about them.

Learn more here:
http://ouroneacrefarm.com/woolly-oak-galls-callirhytis-lanata/