Sedum Green roof maintenance- Vermiculite/perlite or other?

Discussion in 'Other Plants' started by My Clay Jungle, Mar 31, 2024.

  1. My Clay Jungle

    My Clay Jungle Apprentice Gardener

    Joined:
    Mar 14, 2024
    Messages:
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    Gender:
    Female
    Location:
    Coastal Suffolk/Essex Border
    Ratings:
    +22
    My green roof (2yrs old) is patchy and needs maintenance. I've read the instructions from the installation company, but they are vague. I'm going to add slow release fertiliser, with sedum off cuts plus a 'substrate'- but should this substrate contain vermiculite, perlite or something else? Everything I read contradicts other sites. Any help appreciated.
     
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