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Thread: Recycling old soil

  1. #1

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    Default Recycling old soil

    Alright folks, I'm wondering if someone can enlighten me on using old soil again. I've got about 15 ltr of soil that was only in use for 4 wks or so, plenty of roots etc mixed in with it though. How do I go about cleaning it or ridding it of any potential bugs etc, then using it again? I imagine it's gonna need revitalising, so the usual organic amendments for each need, nitro, mag etc?

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    The best way to get rid of bugs, is to lock the soil up in your car, when it is hot out. 140 degrees in A car for A day will kill any thing. Or you can spray the top with Raid and in A couple of days chrun the soil up.

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    Do not use raid on or anywhere near plants you're smoking!!! That is god awful advice
    If the soil has been used for four weeks it'll still be good for seedlings etc.
    If using bottled nutes then it should be ok, if not wanting to add nutrients you can recharge the soil using things such as blood and bone meal and worm castings. Though this will need 60 days to mature and not be too hot to plant into.
    What are you looking to do?

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    Do you think there will be bugs in your soil man?? Why? No need to remove the roots just churn it up and add your ammendments, I'm currently using my soil for the 3rd time. Granted I rejuvenate it with ecpthrive life cycle after every grow. Or may last go I added all the ammendments myself and its been sound. This will be last time I use it tho. I'll start fresh next time just for peace of mind I also want to change out the perlite for rice hulls

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    Quote Originally Posted by Jesse_tpfi View Post
    Do not use raid on or anywhere near plants you're smoking!!! That is god awful advice
    If the soil has been used for four weeks it'll still be good for seedlings etc.
    If using bottled nutes then it should be ok, if not wanting to add nutrients you can recharge the soil using things such as blood and bone meal and worm castings. Though this will need 60 days to mature and not be too hot to plant into.
    What are you looking to do?

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    I've got a clone I need to pot up before it gets too much, it's only in a small plastic cup atm. I could buy a small bag of soil but seemed a good time to enquire about reusing this lot. I have plant magic organic and hard water soil nutes, also canna bio. So when adding amendments it needs to be left to 'cook', that right? And you'd say about 60 days. It'll be potted up again before flower but thats ages away. so could cook some with amendments for when it goes into flower

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    Quote Originally Posted by Wags View Post
    Do you think there will be bugs in your soil man?? Why? No need to remove the roots just churn it up and add your ammendments, I'm currently using my soil for the 3rd time. Granted I rejuvenate it with ecpthrive life cycle after every grow. Or may last go I added all the ammendments myself and its been sound. This will be last time I use it tho. I'll start fresh next time just for peace of mind I also want to change out the perlite for rice hulls

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    I thought it was standard mate lol, just dippin my toe in now. I guess I always have gnats, this time pretty minimal tbf, so assumed it would need it. Never had any other issue regards bugs etc that I'm aware of

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    Quote Originally Posted by MrCannab1sir View Post
    I thought it was standard mate lol, just dippin my toe in now. I guess I always have gnats, this time pretty minimal tbf, so assumed it would need it. Never had any other issue regards bugs etc that I'm aware of
    I would worry about the bugs man. Stick some neem meal in it. U be sound.

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    That soils still new lol
    Add kelp to the neem also if you want to be sure to kill any larvae that might be there add malted barley drench it with aloe Vera water and you are good to go
    Redz
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    Just to put your mind at ease, i have previously and very successfully transplanted a new plant into a pot of old soil of a plant that had literally just been chopped. If your using nutrients don't worry about it

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    Cheers fellas, thought it best to raise the issue instead of just ploughin ahead and paying for it later. Just letting it dry out a bit then I'll use some of the suggestions and pot up

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    The old method was to bung it in the oven.
    Never done it nor do I know if you need to just saying what some used to do to re use soil
    Bite The Bullet ~ rip Motörhead.
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    Quote Originally Posted by Stillmix View Post
    The old method was to bung it in the oven.
    Never done it nor do I know if you need to just saying what some used to do to re use soil
    No, no need for the oven
    Redz

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    I’m not no soil man and never will be the quality of the soils that you can get compared to the old quality is how you say shit! It’s turned out to fast not given enough time to cook tidy. Not like in the past where the quality was the main thing and producers took pride in their product. But as for killing bugs just tip petrol into it and then some bleach that should do the trick!!
    No doctor I’m not taking my tablets anymore i told you i like my new wings and velvet legs! Ohh a square ball yes for the no sense of humour crowd from (But as for killing bugs) is just me being a twat it’s one of my bad days so please don’t take it seriously


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    That soil is perfect for reusing right now but if you have gnats then it means your soil is holding too much water. I had the same problem. I mixed in about 1/2 coco coir and drilled holes in the side of my buckets. It seems to have fixed my gnat problem. Also if you use bug killer or anything like that your going to kill all the good bacteria in you soil.
    Last edited by Tommy Tutone; 12-01-21 at 11:00 PM.

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    Quote Originally Posted by Tommy Tutone View Post
    That soil is perfect for reusing right now but if you have gnats then it means your soil is holding too much water. I had the same problem. I mixed in about 1/2 coco coir and drilled holes in the side of my buckets. It seems to have fixed my gnat problem. Also if you use bug killer or anything like that your going to kill all the good bacteria in you soil.
    Cheers man, soil is damp, not sure if there is any in there, it's just that I always seem to get them, even to a small degree. Should be pretty sound as this grow they're not that noticable

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    Quote Originally Posted by redisiel View Post
    No, no need for the oven
    Redz
    Tbh I didn’t think so.
    I’ve not reused soil before just a thing I know some did probably different under different circumstances thought than a 2nd use potting soil

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    I thought that was the whole idea of soil to just keep on reusing it till it got too the stage where its that full of the good organic cultures that if you didn’t lock it down the stuff would just walk off it is that full of ohhh mamma good organic culture. Then again i am a hydro lazy arse lol( if you haven’t tried it thats what most people think about hydro) wrong by the way, just saying. But back to the original point about the soil I always assumed that was the point of soil you could create the ultimate in the lady’s dream for settling their roots? Happy roots big beautiful fruits


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