I was wondering if you guys could help me figure out the name of a plant. I was talking to a couple of guys about our hunting properties and we both had problems with this plant here in Illinois. It's so thick and nasty that you can't get through it. Period. There's places in my woods that you can not get into because of this plant. It is great for the deer however, they don't ever really need to leave it because there's a creek that runs through the section of the woods where this stuff grows and there's corn fields that back right up against it. I have a couple stands up against the sides of this stuff, but if the deer is 15 yards away, you can't see anything but feet moving underneath the brush. I've also gone and sat in the edge of the stuff with my shotgun and had deer literally within 10" of me. Insane feeling there! All I know about it is that it supposedly was introduced as a landscaping plant, something that would spread and crawl, and it evidently took over. I think It's Autumn Olive!
Autumn olive, bush honeysuckle, multiflora rose and buckthorn are all invasive, found in Illinois and can be thick like you described.
Probably either bush honeysuckle or autumn olive. They both will take over the understory of a woods. They are both hard to get rid of and can destroy a woods not letting any new trees sprout.
If its on a creek it could be what we call snake grass. Green and tubular. Also could it be some type of cane?
We have that as well! Looks like bamboo, lol. All that stuff growing together makes it kind of hard to hunt the deer in those areas- you just simply can't get in there without tearing everything up.