Answer:
The root tops the trunk on this backward thing, that grows in the winter and dies in the spring.
The stack just might be sent all over. Full of what's new, yet it's nearly obsolete.
I bind it and it walks. I loose it and it stops.
They are many and one, they wave and they drum, Used to cover a state, they go with you everywhere.
What letter comes next: O T T F F S S ?
People take me on walks and I run and have fun. What am I?