Florida has heaps of the stuff. If you read early written accounts of the South before colonists settled the landscape, you will come across references to "canebrakes." These were thick stands of A. donax, typically in river bottoms and marshlands. Good places for an ambush....
This plant figures in my own early story: My parents bought a house a few months before I was born. Apparently the back
yard was wall to wall with this stuff, but they wanted a lawn. So they dug it all out by hand, in the heat of summer, in Tucson(!). My mom was plugging the new lawn when she went into labour. I like to think that I gave her a break from all that yardwork.