If you take a photo at a minimum, photograph the seed head; maybe put something behind the seed head so it shows up well. If possible get a picture of the stuff (leaves) that is growing in deeper water where the leaves are sticking out of the water. One plant (close up 2'-4' away) is fine instead of numerous plants together.


aka Pond Doctor & Dr. Perca Read Pond Boss Magazine -
America's Journal of Pond Management