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Out of interest, is the places where people are finding flat worms, sandy soil? I have heavy clay (though getting well loamed with time) and no flat worms. Have loads of earthworms and no sign (yet) of NZ Flatworms.
If they look like this then destroy them, and save the good old English earth worm.
just found my first flatworm in Perth Scotland and they do decimate earthworms as my colleague in Wolfhill will confirm. The bedding thrown on the ground from his rabbit hutch used to disappear over time but since the discovery of flatworms now just lies there and accumulates.
The earthworms are no longer there in numbers to remove the bedding as they did before.
I've never heard flatworms mentioned on Gardeners World even when all that plant swapping fairs are going on. How can we stop them spreading if they are never mentioned.
I have just found my first NZF in my garden in Totnes Devon. It was in some of last years multipurpose compost which kept in a small dust bin with a lid in the green house. I gave the compost a watering a day before i was going to use it then while sorting in a tray I found the flat. Which makes me think it came in in the bag of compost and we all could be moving them around in the compost we buy.
I just found my first flatworm in East Sussex, at least I'm sure that's what it must be (have been, as it's squashed now) It was stuck to the underside of black polythene covering a layer of manure on a bed. It appeared to be attached to the polythene by a sucker like mouth. Made me think of a leach, although not sure if I've ever seen one of those? I have a feeling that it might've come in with the manure...
Any poisons been found yet
I live in South Manchester and saw my first New Zealand flatworm last September curled up in the loose bark of a tree stump. It was a large adult which I think must have come from a local garden centre when buying plants for my pond. Since then I have found many smaller ones at the bottom of my POND when using a net. They move extremely fast in water.
I think brought in composts, manures, plants in pots etc will be how these flat worms will enter our gardens. I am careful to check plants but mpc etc are more difficult...these are not as good, as clean or as pest free as I think they once were. I remember one batch actually contained weedkiller.
I found them this yr nr Ayr. Just a couple, but had read some article long ago and remembered them. From all of your posts, laying black polythene is a good trap? I lay it every yr about now to start warming my veg beds, but can't say that's where I found them. Plenty slugs and snails, though, all fed to the birds! Will birds eat them? Will it harm them if they do? I have noticed less worms in my compost and it has taken longer to decompose this last yr.
Verdun, I agree with you, and I would like to make my own potting compost, but I barely keep up with the needs of my beds with homemade compost. And how do you sterilise home-made potting composts?