...Sounds like it is pretty easy to control chemically or even mechanically if it is not too big.
It can be, but it can also be a huge mess that can spread like crazy.
Most of the unmanaged ponds I see around here have something growing in them, and most of them start looking pretty ragged by summer. As much as I like WP, it can still overtake a pond and become a royal PITA.
I'm not sure I'd ever introduce it to a pond, but I've got it, and have found a way to live with it.
EDIT: Snrub, what would be an interesting thread to me, is Kelly Duffie and others commenting on what are the hardest invasives to control, and which can stay controlled. Not the actual treatment per say, but which one's cause a chemical applicator to double down on his/her efforts.
