"Another John" wrote in message
...
Yes - a popular topic. :-( I realise that this is a FAQ, but technology
changes year by year, and I'm wondering what the latest views are.

I'm currently cleaning out our pond, for various reasons, but one of
them is that I want to have a real go at the damned blanket weed that
invaded several years ago, and finally got the better of us a year or
two ago.

I have drained the pond, and I'm scrubbing at the liner with a hard
floor brush, in an attempt to remove as much of the weed as possible.
It's almost *im*possible: traces of the weed remain no matter how hard
I scrub.

I'm aware that many "treatments" exist (I tried one a couple of years
ago), but do any of them actually work? I'm always afraid that it might
do for other things as well as the blanket weed. The one that I did try
(Tetrapond Algofin) had little discernible effect.

I suspect that the consensus will be: "put up with it, and try to
remove it regularly" :-(

Cheers
John

John when you come to refill your pond can I suggest you try and pipe the
rain water from your house roof and do not use tap water, also avoid using
any high nutrient soils in any plantings. using rain water greatly reduces
the amount of blanket weed that can grow

Make some fake lily leaves out of dark green plastic sheet and float them on
the pond until the real ones grow enough (helps to cut down on the light)

Use lots of plants you should able to see 50% or less water in summer

Good luck

--
Charlie, Gardening in Cornwall
Holders of National Collections of Clematis viticella
and Lapageria rosea cvs
http://www.roselandhouse.co.uk