Create a limerick poem with the topic of nature.
There once was a tree in the glen
That stretched towards the sky with zen
It offered sweet shade
A patterned leafed blade 
A beauty that whispered amen.
Complete the following task based on the instruction and optional input provided.### Instruction:
Create a limerick poem with the topic of nature.

### Output:
There once was a tree in the glen
That stretched towards the sky with zen
It offered sweet shade
A patterned leafed blade 
A beauty that whispered amen.