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Weed seeds in compost

Hi all, I'm a very enthusiastic composter and spend happy hours turning and mixing my bins to produce some lovely black stuff. Just wondering wether it will sufficiently rot weed seeds and roots for them to not regrow I put absolutely everything into the heap after running it through the mower. I regularly get the bins upto 88°c and was hoping this would kill them off. Any advice would be great 


  • Hostafan1Hostafan1 Posts: 34,739
    there's no guarantee , but it sounds like you're doing everything right. 
  • AstroAstro Posts: 425
    I've had a bins up to around 65c and there hasn't been a weed problem. When the compost is spread on the ground, any seeds that germinate  are easier to remove from it owing to it being less compacted and light anyway. I've had the odd tomato, courgette and pumpkin germinate and then potted them up. 
  • WilderbeastWilderbeast Posts: 1,415
    Thanks all I'll keep at it and come spring I'll see how it goes 
  • I have the same problem with my compost full of weeds, spend hour trying to not put any seeds in but blow me do they grow when I use the compost
  • HelixHelix Posts: 631
    I don’t put bindweed or ground elder in the compost, but everything else goes in.  Some stuff does make it through and germinate, but I’d get new weeds coming in from windborne seeds anyway, so I don’t worry too much. 
  • I had some fun this year. I bought some cow muck from a local farmer last year (boy was he pleased) and it came up full of cherry tomato seeds. I let a lot of them grow and we got a good crop! I think it is an occupational hazard...
    Everyone likes butterflies. Nobody likes caterpillars.
  • The cows had been fed on cherry tomatoes? 🤔 

    Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.

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