Been super interested to know what tree is this, I hope you guys can help.
I live in the Mediterranean, however i don't think this tree is indigenous to the area.
Its a fast growing tree (tree is around 3 years old in the pictures),
Relatively large tree (grows higher than a 3 story building),
Its invasive, its seeds are spread very easily (half a dozen sprout up every year),
It doesn't flower, but its seeds/fruits form in clusters, yellowish in color, and are in an elongated tube shell.
Below are some pictures in different seasons, I hope someone can help