My Mystery Seed

I plant a seed,
I wonder what it could be,
It starts to grow,
But it’s very slow,

I leave it in the sun,
Then I come back when it’s done,
It was still so small,
I really wished it was tall,

I wonder what it could be,
Maybe a tree,
I wait for the next day,
Then I wake up today,

Then I saw my seed- it  became,
Still the same!