I am green but I am sweet what am I? do you know?

A beautiful end to an ugly start, or at least that's how the tale goes. But dive in without water, and I'm a beautiful start to an ugly end. Oddly, I don't really do the action that was named after me.

With a pole up my backside. I feel no pain. That might change If I only had a brain.

I'm sometimes holy But never wholly made of Hass.

The sun stands still, though never at rest, lingering long in the north or south crest. One day stretches, the other grows small, a turning of light that governs us all.