Does watercress also grow along your brook, SPedigrees?
Those plants are common where European Americans lived 100+ years ago, around here. It must have been deliberately planted. I can't bring myself to harvest any because I cannot be sure what goes on higher up, along the creek. Other than I am confident that there is some water draining into the ground around some residences.
I grew it in the big veggie garden once because a leak in the big irrigation line provided the opportunity. With a short piece of pvc pipe, I directed a trickle to a nearby bed after moving about 4" of soil out of an area about 3' x 5'. It worked fine to grow watercress started from the grocery store produce aisle
. The next year the irrigation valve was replaced and so ended my having a small pond of watercress.
Oatmeal and raisins in the bowl, oranges on the side, oolong in the cup ... herbal brewing in the kettle – breakfast!
Steve