Old compost

Will 2year old John Innes compost, in an unopened bag, still be good to use. It has been kept dry and out of the sun.


  • HexagonHexagon Posts: 922

    Did you think that the nutrients might've disappeared into thin air?
  • No, but have had such mixed advice, so I thought best to ask here. Thank you.
  • HexagonHexagon Posts: 922
    I'm interested in what other advice you've heard.
  • Rik56Rik56 WiganPosts: 62
    At worst it will still make good soil conditioner.
  • Thank you. Someone said how do you know how old it is when you buy it early in the season!
  • FireFire LondonPosts: 5,464
    Interesting. I've heard too that you should use compost as soon as possible and not store it for years.
  • HexagonHexagon Posts: 922
    The carbon and nitrogen are still in the bag, it doesn't just disappear. Unless there's another reason why "people" say it should be used asap? I'd be interested to read any science on this.
  • Thank you for sound scientific advice, weather looks good too, so outside and busy today.
  • Hostafan1Hostafan1 Posts: 22,203
    IMHO, worst case scenario is you'll have to feed plants earlier than usual
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