Grit

Discussion in 'Maples' started by Rich, Sep 17, 2023.

  1. Rich

    Rich New Member

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    Hi all can someone tell me what sort of grit you use in your Acer compost I have read there are many types most seem unsuitable don't want to make any mistakes as I am new to growing them I am from Wales uk thanks so much Rich.
     
  2. Acerholic

    Acerholic Paragon of Plants Forums Moderator VCBF Cherry Scout Maple Society

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    Hi Rich and welcome to the maples forum. I use horticultural potting grit mixed with John Innes no3. I also mix in potting pine bark and perlite. Basically anything that gives good air circulation and good drainage.
    Maples like moist roots but not soggy.
     
  3. AlainK

    AlainK Renowned Contributor Forums Moderator Maple Society 10 Years

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    I use pozzolan (5 mm, hard to find) and/or pumice and composted pine bark : I'm lucky to have a wholesale retailer near where I live and I can buy 30 litres bags for a very reasonable price.
     
  4. Rich

    Rich New Member

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    Thank you for taking the time to reply much appreciated Rich.
     
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  5. AlainK

    AlainK Renowned Contributor Forums Moderator Maple Society 10 Years

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    The thing is, pozzolan has holes, and sharp edges : it can retain a bit of water, and split the roots into finer roots;

    Pumice, weighs lighter, very good when you want to move a pot and your back is sore;

    If "grit" is from flint or granite and is between 0.5 and 1.5 centimetres, it will just add weight to a pot;

    If "grit" is 1.5/3mm granite (or neutral rock), the white roots like it with fine compost.
     

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