Best compost mix for alpines?

Discussion in 'General Gardening Discussion' started by fumanchu, Mar 18, 2024.

  1. fumanchu

    fumanchu Gardener

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    Coming this week, 6ft x 2ft trough planter, to be used for rockery/alpine plants. What compost should I buy for that?
     
  2. Punkdoc

    Punkdoc Super Gardener

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    I grow mine in a 50/50 mix of JI2 and grit.
     
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    • pete

      pete Growing a bit of this and a bit of that....

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      I don't think I've ever come across a ready mixed compost for alpines.

      I think you might have to mix it yourself.
      Agree with punkdoc you need sharp grit and a soil based compost mixed together.
      You don't want any thing too rich.
       
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      • fairygirl

        fairygirl Total Gardener

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        I agree too. Compost just breaks down and disappears, so you need something sturdier. The more grit the better.
        I grow a few sempervivums in almost pure grit. Other alpine type plants have a bit more soil. Compost is fine short term for smaller containers, but not for something bigger. :smile:
         
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        • fumanchu

          fumanchu Gardener

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          Thanks :biggrin: Can you buy bags of grit?
           
        • fairygirl

          fairygirl Total Gardener

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          I buy grit in B&Q - much cheaper then GCs etc. You can even use pea gravel, depending on what you're planting.
           
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          • Punkdoc

            Punkdoc Super Gardener

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            Grit is readily available at most G/S.
             
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            • pete

              pete Growing a bit of this and a bit of that....

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              I buy sharp grit for cacti and often come up with the same mix you need for alpines.
               
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              • JWK

                JWK Gardener Staff Member

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                I buy grit from Wickes, much cheaper than horticultural grit from the GC. However it does need a hose running through the bag to wash away any salts.
                 
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                • fairygirl

                  fairygirl Total Gardener

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                  Yes - I put mine into a container which has plenty of holes in it, but I have some fine mesh that I put across the bottom. It gets a good wash when it's raining, and if I need it before then, I do some through the sieve with some extra mesh.
                   
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                  • fumanchu

                    fumanchu Gardener

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                  • Spruce

                    Spruce Glad to be back .....

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                    I watched a gardening programme many moons ago and they washed all the multipurpose compost off the roots from the alpine plants before planting as the compost was too soggy to the stems and the main roots and would cause rotting over the winter with holding too much water .... and the plants were all in pots and very quickly settled in you wouldn't of known they had had the multipurpose compost removed

                    Spruce
                     
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