I tired of trying to find an answer to this question through the search fields. I think I actually asked this question years ago and never got an answer.
What marginal water plants, hardy or tropical, have y'all had luck with situated next to a waterfall where they receive constant splashing to some degree from the waterfall.
I've got a four foot tall fall that drops vertically to the main pond and splashes quite a bit as it hits a few jutting rocks on the way down. I have shelve space (12 inches deep) directly adjacent to both sides of the fall, and would really like a taller marginal plant to "frame" the waterfall; it would have to be able to handle being constantly wet from the splashing waterfall.
Over the last ten years I've experimented with several plants: irises, cattails, lizard tail, etc, but all eventually subcumb to being constantly wet.