Identity of this aquatic plant?

[philocalist]

 

Is this what it looks like in flower?..if so it is what Ayjay says Nymphoides peltata...a wild water lily.

That's a large part of the current problem: this picture MIGHT be the culprit BUT a/ I can't find any pictures I might have from last year of the flowers for a better comparison, and b/ the leaves on all suggestions so far ave very different from those shown in my original photo's ... but thanks for all the help and suggestions so far.

[Phone]

Philo,

 

I did as everyone else (images). I am more inclined to include stress from light and water quality. It's very improbable you've got a new lily on your hands. To me - only - it looks like phosphate damage.

 

nymphaea tetragona

 

Phone

[ayjay]

and b/ the leaves on all suggestions so far ave very different from those shown in my original photo's ... but thanks for all the help and suggestions so far.

 

The reddish colouration of the leaves is quite common in the water lily family of plants, some plants will always display colouration like that right through the growing season, it's also quite common on plants that are usually green for the leaves to be that colour early in the season, especially in colder conditions.

[Latimeria]

I'd also go with N. peltata, sometimes called Water Pest, it can be very vigorous http://www.mindenpictures.com/search/preview/underwater-view-of-fringed-water-lily/0_90149987.html

Edited May 18, 2016 by Latimeria

[Ken L]

Got it in a couple of local ponds. It's ability to grow in relatively deep water can detract from the fishing in those ponds, especially if you want to use light lines.

[Steve Burke]

When I was setting up Wingham Bruno Broughton advised me on no account plant pygmy/dwarf water lilies. He said that ordinary water lilies are difficult enough to control but those are a devil!

[philocalist]

Steve, they were never planted, just appeared and are spreading. Still trying to work out the best way of control, with chemicals being a last resport if applicable.

Any thoughts about whether the spreading of this stuff will be made worse if we drag or cut, assuming that there will be water-borne bits all over?

[Steve Burke]

Sorry, I'm not qualified to give advice on their removal as it's not a problem I've come across myself.

 

I very much doubt you'll get permission to use chemicals as their use is now illegal in nearly every case.

[chesters1]

Grab yourself a few gallons of roundup i have a suspicion as its not made by beyer (instead the dark power monsanto) the EU will ban it

The club has a rake that needs two to lift it ,its will rip out most plants if needed,its put on a boat which toodles off to the middle where the handlers pull it off the boat its then winched in by a landy ,no bodies yet but if its there it will be found LOL.

My bosses pond had similar weeds ,i killed them (took a while) by putting a few leaves on a bit of expanded foam sheet and painting them with roundup ,once dry the sheet was removed ,its a pretty safe herbicide around water

Edited May 23, 2016 by chesters1

[Steve Burke]

Dave, Roundup is illegal to use in an aquatic environment.