Answer:
I am in the past never in the future. I don't exist but have existed. I saw what you saw and that is what I will ever see.
I have leaves on my fruit my fruit is on my leaves.
I have a name that's not mine and no one cares about me in their prime. People cry at my sight and lie by me all day and night.
I am the home for feathery animals.
If a man carries my burden they will get crushed to death. Though not rich I leave silver in my track.
For our ambrosia we were blessed, By Jupiter, with a sting of death. Though our might, to some is jest, We have quelled the dragon's breath. Who are we?