ID on pond plant

Any idea on this pond plant? It was growing in a pond in downtown Chattanooga, TN Monarchs all over it.

Sorry, can't help.

thanks,

Did you put this plant on the id thread? Anyone there know what it is?

Hi, Sheila,
where is the id thread? I searched communities.
I sure would love to know what this is... We are rebuilding our butterfly garden at Lake Tobosofkee.

thanks,
Elaine

Here is the link..... http://davesgarden.com/community/forums/f/plantid/all/
I keep it bookmarked on my watched forums so I can find it easy. I learn a lot by seeing what everyone is asking about. You can usually get a quick response from someone on there.

From what I can see it looks like Alligatorweed (Alternanthera philoxeroides), but I'm not certain.

Dale Clark
Dallas County Lepidopterists' Society
www.dallasbutterflies.com

Thanks for the link, Sheila.
Yikes. invasive. Don't think I will plant this in our butterfly garden, unless it is in a pond by itself.
Thanks, Dale