'Tree' in the Bible

So Judah and Israel were living safely, every man under his vine and his fig-tree, from Dan as far as Beer-sheba, all the days of Solomon.

And went after the man of God, and came up with him while he was seated under an oak-tree. And he said to him, Are you the man of God who came from Judah? And he said, I am.

For they made high places and upright stones and wood pillars on every high hill and under every green tree;