Black Walnut?

Not sure what this is...maybe black walnut?

[Milanie]

Nice close-up of the nut

[gloria jones]

Nice capture of shapes and textures

[Diana]

Beautiful close up.

[KoalaGardens🐨]

not sure - you will have to keep an eye on it :)

[Denise (lyndemc)]

That'd be my guess too, but then, I'm not a nut expert. :)