Thanks, Jeff. I shoulda searched the park site I guess.
It's a problem for sure when the 'erosion control' plants become a problem themselves-like kudzu and willow. Willow will grow-in so thick that you can't get thru it-like weeds rather than individual scattered bushes. Nothing eats it that I'm aware of [no browse lines in Michigan evident] and it's worthless as wood.
Other than a kids 'home made' bow or fishing pole, I've never seen it used for anything. Goesn't even supply birds or insects with anything that I'm aware of. Beaver use it in their dams some IIRC. Good places for snakes to hide:-). Ghost