This volunteer single clump perennial plant is growing in soil that
alternates between very wet and damp. I noticed it a year ago and watched
to see if it survived the Winter and it did with great vigour. It is much
larger now than when I first saw it. It propagates by seed most likely. I
will look at the root system to see if there are any underground runners or
rhizomes. It would work well in a constructed wetland or along crenelated
edges of a pool or pond based aquaculture system as part of the ecosystem
and to bioremediate excess nutrients in runoff feeding any water
impoundment.