Anyone know what these are?

[BoatGuy]

I found them in my back and front yard. There is a lot of them. I have mostly oaks and a few maple trees. But the oaks make acorns and the maple trees the little propeller seeds.

Someone told me they were hornet eggs. But there are hundreds of them and if you cut them open they a have a reddish interior and green center. Pics attached to give you an sense of scale.

Any help appreciated.

 

[Roccus7]

I found them in my back and front yard. There is a lot of them. I have mostly oaks and a few maple trees. But the oaks make acorns and the maple trees the little propeller seeds.

Someone told me they were hornet eggs. But there are hundreds of them and if you cut them open they a have a reddish interior and green center. Pics attached to give you an sense of scale.

Any help appreciated.View attachment 55106View attachment 55107View attachment 55108

They are the egg cases for some wasp "Cotton Ball Wasps". Very common in oaks.

Cotton ball looking nest? The size of a marble.

 

[BoatGuy]

Darn. I must have hundreds in my back yard.

 

[dsedy]

 

[BoatGuy]

Cute, but not setting my backyard up in flames.

Actually, I was doing some reading and the wasps are predatory for insects and never bite or sting humans. Maybe a good thing?