Nope. The trees are all handmade :). I dont like to pay for something i can do myself and esp. i dont like the way the speedtrees look when you get closer. They have this modular feeling, kinda generic (though i kinda had the idea to make my own treegenerator within houdini) . I even modelled the twigs and leaves and baked them onto planes to get good normalmaps and take away the planar feel . I made about 5-8 different types off trees. Not entirely sure about the number. It got messy midway through xD.
edit: for anyone whos interested: i use the procedual foliage spawner to place the forests and even most of the stuff on the ground except for the grass and small rocks. It really is an awesome tool.