Winter secret.

Take me and blow me away.
I am a leaf in the wind on a journey
and at the mercy of the wind.
When I fell from the branch
I left home but not without a purpose.
I need to protect the roots from the cold.
Winter will be hard, so I was told.
Let me tell you a secret while we talk anyway.
When winter is soft we get to be blown far away,
when winter is hard as close as possible to the stam we stay.