When do you use john innes no 1

Discussion in 'Compost, Fertilisers & Recycling' started by shrimp, Aug 1, 2020.

  1. shrimp

    shrimp Apprentice Gardener

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    I seen a bag of john innes no 1 and I was wondering when this would be used as one of my phyllostachys nigra seeds have started to germinate so I don't know if to pot it in seed and cutting compost or buy a bag of john innes no 1.
     
  2. mazambo

    mazambo Total Gardener

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    John innes no1 is used for potting up seedlings that are ready for pricking out and cuttings etc, it gives them more nutrients but not enough to over feed them, I'm not sure if it would be better mixed with a little extra perlite for good drainage as I've never grown bamboo from seed.
     
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    • pete

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

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      Must admit I've never used JI seed, no 1 or no2, only every buy no3.

      I usually mix it with sharp sand or grit or multipurpose.

      I know the thinking behind it but it seems a bit much for amateur growers and just another way of getting you to buy different products.

      I'd never use it on its own anyway, usually turns to mud once you water it.:biggrin:
       
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      • shrimp

        shrimp Apprentice Gardener

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        I've bought a bag of john innes no 1 to try but should I add something to help drainage. I have john innes no 3 but it holds to much water so how much sharp sand / grit / multipurpose do you use and what grit do you use as the only grit I have is for a fish tank or chickens but I didn't know if this would be ok.
         
      • pete

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

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        Well I add sharp sand, but any grit helps, best if its a bit sharp, probably need finer stuff for seedlings, I think a small amount say 25% of a peat product helps to aerate the compost.
        Just find most JI to be claggy when wet.

        The reason I use No 3 is because it contains the highest nutrient level, but because I'm adding other stuff, that has pretty much no nutrient, it kind of dilutes the fertilizer effect.

        If you have No1 then fine, it will work.
        Nothing about growing plants is an exact science, well it can be, but to you and me its probably not and best not to worry too much, most plants are pretty resilient.
         
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        • shrimp

          shrimp Apprentice Gardener

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          I've read bamboo needs aerated and well drained soil but the seed and cutting compost i'm using holds the water which I think is down to the added vermiculite. John innes no 1 also has added vermiculite so it maybe best to add perlite or some other grit.
           
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          • SandyNI

            SandyNI Gardener

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            I used J1 earlier this year to pot on 300 seedlings.... and used it pure. Definitely needs something to help with drainage. I won't be making that mistake again.
             
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            • shrimp

              shrimp Apprentice Gardener

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              If you was to use it again what would you use to help drainage.
               
            • SandyNI

              SandyNI Gardener

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              perlite
               
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              • Jymi riddler

                Jymi riddler Chilled Gardener

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                I was disappointed with my bag of J1.
                As mentioned it soon turns to rock like mud.
                I just use it now added to cacti compost for my cacti's, and to get shot of it.
                I've always had good results with multi purpose compost for seedlings.
                 
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