1-800-got-junk?
If you haven't already, check with your trash service. I don't know how much you're talking, but I just pulled out a ton of pine trees and bushes. Waste Management picked it all up. The first 3 yards were free, and anything over that was only $11.62 a cubic yard. Did it over the course of a couple weeks to save some $. All they asked is I let them know when I'd being going over my regular amount. It was FAR cheaper then any of the dumpster options I looked into.