This place TAMU Plant Database is great for PondMeisters. Pay attention to how the leaves are located around the main stem.

If it was my pond, I'd try like heck to eradicate it and replace it with other, more friendly pond plants (types of pondweed).

Chemical means because I think if it is Eloda, mechanical means will just spread it unless you are VERY careful and thorough. This year while there are only inexpensive minnows in the pond vs. expensive gamefish. (not saying that the minnows are cheap, just less expensive than LMB/BG or other fish.)


www.hoosierpondpros.com

[Linked Image from lh6.ggpht.com]
http://www.pondboss.com/subscribe.asp?c=4
3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).