Answer:
What has roots that nobody sees, and is taller than trees. Up, up it goes, and yet it never grows.
He has married many women but has never married.
You can tumble in it, roll in it, burn it, animal eat it. Used to cover floors, still used beyond stall doors. Freshens whatever it is placed on. Absorbs whatever is poured into it.
I can be written, I can be spoken, I can be exposed, I can be broken.
Sleeping during the day, I hide away. Watchful through the night, I open at dawn's light. But only for the briefest time, do I shine. And then I hide away. And sleep through the day.
In your fire you hear me scream! Creaking and whining yet I am dead before you lay me in your hearth.