Pond Boss Forums Thread Like Summary - Weed ident, video inside.

Hi all, seems I have lots of one particular weed coming up from as far as the sunlight will reach, not sure if its a bad weed or not but it is proliferating. I think it is leafy pondweed Potamogeton foliosus. I can cut it easily enough but do i need to? do these tend to choke out a pond/lake or is the decay in the winter under the ice the real bad part? In my video it is weed number 2 I believe.

Not sure what weed number 1 and 3 are or if i got number 2 right.

Here is the video

No weed ideas, but NICE VIDEO.

The more weeds present going into ice and snow cover the greater the chance of oxygen shortage and fish kill. Weed number 2 does look like one of the narrow leaf pondweeds. Camera was moving too fast and did not pause to get a good close look at the detailed weed characteristics.
Do you know what the minnows were with the horizonal stripes? Were they your dace?

That is a type of milfoil, possibly Eurasian Water Milfoil. Bad for the pond, it will completely take over and is an extremely invasive species. To kill that plant and not any of the others, a 10 PPB dosage of Fluridone will kill it. It has to stay around 7-10 PPB for close to 30 days for it to be effective, so if you have water flowing through the pond it will be hard to keep that dosage rate. If there is no flow through I really like using Fluridone (Sonar A.S. or it's generic equivalent) as it only affects some invasive species at low dosage rates and does not affect native plants. I don't know of another systemic herbicide that will do that.



This one I am not sure about as I haven't seen it before.


Potamogeton foliosus.could be correct, but any species of Potamogeton will be controlled (you can spot treat areas) with Aquathol K or Aquathol Super K