What is it ??

An old wooden planter ? I'm pretty sure the white stains are from water.

 

Nope.. hint it’s growing .. it’s alive…

 

That must be that tree you have that has different colors in it's bark. I don't remember the name of that tree.

 

Yeap Anniekay you got it. Beats the bird poop guess..

It’s the striped maple tricolor leaf tree. The bark of a striped maple (Acer pensylvanicum) features conspicuous vertical stripes. Very rare and a small understory tree.
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Pac— you’ve shown that before, haven’t you?

 

Sjoerd… Yes I have shown this tree before included in my small understory tree collection. The hint gave it away.

 

Here is a simple one: