Albizia julibrissin (mimosa tree) infestation?

Im not exactly sure of the "type" of Albizia julibrissin i have in my yard but i'm leaning toward the "Ombrella" version. Very long slender stalks that grow up to 20-30 feet high if left alone. These things have taken over my property. Imagine two acres of these. They are almost impossible to get rid of as now it's gotten so prolific i can't clear the property fast enough and when i do they either regrow or drop more seeds and come back even denser. When do these things seed? how fast? how many times a season? What is the best method to clear out a large clump of them as i just can't do it anymore. Will fire destroy their seeds? When should i act? Right now they are not flowering and basically are bare stalks. I basically have 2 acres of 30 ft stalks. Nothing i have ever done can get rid of them. Please help me. I can't stand looking at these things another year and now they're moving into the neighbors property. How can i kill these weed trees and reclaim my yard?

Albizia julibrissin (mimosa tree) infestation?
This is the whole page of the URLS for the invasive mimosa and all are from Australia.

http://search.yahoo.com/search;_ylt=A0ge...

My suggestion contact your nearest University Extention and ask for some help. If you eventually wind up with the web worm you'll have damage to other species od trees.

You don't state where you live so help will be up to you to find it and the extention is usually the best place.

EDITED:

I will tell you this, they don't know enough about a chemical kill to recommend one. With the amount of space they have on your property I wouldn't use it anyway.

sweat equity is the best program get as many of your friend as your can and go on "chopping spree" do it before it blooms to keep it from seeding. Just keep doing that until you eradicate it. Remember though the seeds can stay viable for years.
Reply:http://www.invasive.org/eastern/eppc/mim...

I hope it helps.
Reply:ATRIZINE..ROUNDUP