Forum home› Problem solving
This Forum will close on Wednesday 27 March, 2024. Please refer to the announcement on the Discussions page for further detail.

Duck Weed

bertrand-mabelbertrand-mabel Posts: 2,697
in Problem solving
Does anyone have a successful remedy for getting rid of duck weed from a pond?
Many thanks

Posts

  • K67K67 Posts: 2,506
    Ducks? 
    Sorry couldn't resist
  • Singing GardenerSinging Gardener Posts: 1,237
    If you google "duckweed control" there are lots of eco-friendly remedies available. We used one of these with total success but I'm afraid I can't remember exactly which one as it was several years ago. The duckweed never returned.
  • BenCottoBenCotto Posts: 4,718
    edited March 2021
    I use Nishikoi Clear Waters which is excellent for blanket weed. On the tub it also says it is effective against duck weed though that is something we don’t have a problem with - and that could be due to Clear Waters.
    Rutland, England
  • Pete.8Pete.8 Posts: 11,340
    I used to have lots of it in both ponds, but now only get a tiny amount in my little pond.
    When it used to be a problem, I'd use a jet from the hose to push it all to one end of the pond then net it out. 

    Billericay - Essex

    Knowledge is knowing that a tomato is a fruit.
    Wisdom is not putting it in a fruit salad.
  • clarke.bruntclarke.brunt Posts: 215
    edited March 2021
    After a few years with no duckweed, I accidentally introduced some with some bits of a pond-weed from nearby lakes. I never had much, and the pond is small enough that I could remove any as sighted (this was hindered a bit when a leylandii conifer fell across the pond - it was a few months before I cut it up and removed it - duckweed was hiding underneath). I spotted just one or two duckweed plants (single leaves) over this winter, but it looks like I've essentially got rid of it.

    I see that Nishikoi indeed mention duckweed as well in their product targeting blanketweed. At least blanketweed is an alga, but duckweed is a normal plant - difficult to imagine something affecting it without affecting other plants.
  • bertrand-mabelbertrand-mabel Posts: 2,697
    Thank you all for your help. We will investigate further.
  • Singing GardenerSinging Gardener Posts: 1,237
    clarke.brunt said:

    I see that Nishikoi indeed mention duckweed as well in their product targeting blanketweed. At least blanketweed is an alga, but duckweed is a normal plant - difficult to imagine something affecting it without affecting other plants.
    I agree it seems unlikely but it worked a treat for us without apparently affecting either plants or pond creatures!
  • bertrand-mabelbertrand-mabel Posts: 2,697
    Agree with you both as to an algae against a flowering plant having a product that could work against both.
    Again we have to give it a go and investigate and hopefully it will work.
  • SueAtooSueAtoo Posts: 380
    Goldfish. I actually take it out of my wildlife pond to feed the goldfish in their pond.
    East Dorset, new (to me) rather neglected garden.
Sign In or Register to comment.