Sure, here is a short poem about a tree facing its mortality:
The tree stands tall and proud, But time has taken its toll. Leaves once green now wither and brown, As the tree faces its own mortality.
It has stood for many years, Providing shade and shelter to all. But now, its time is drawing near, As the tree faces its final fall.
Though its life may soon be done, The tree's legacy will live on. For the seeds it once did bear, Will grow to be strong and fair.
So though the tree may fade away, Its memory will always stay. In the hearts of those who knew, The beauty of the tree that grew.