Lightweight concrete recipe for raised beds!


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Thought I would make a few sidewall for raised bed this winter? I need to fallow our garden but am not a fan of wood for the purpose.
 
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Why have walls at all? I have seen some very nice looking raised beds that are just sloped and mulched on the edges. I have never tried it but I know it looks a lot less industrial than some of the wood or cement walls I have seen.
 
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Why have walls at all? I have seen some very nice looking raised beds that are just sloped and mulched on the edges. I have never tried it but I know it looks a lot less industrial than some of the wood or cement walls I have seen.
In this case I want to truly isolate the garden soil for a number of years. I use a hill row method now, for spring drainage.
 
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Depending on what you want to plant concrete may not work for you. It can cause the soil to become alkaline. This would be a problem with some plants that are acid lovers.
 
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Depending on what you want to plant concrete may not work for you. It can cause the soil to become alkaline. This would be a problem with some plants that are acid lovers.
I am considering hypertufa, with vermiculite at this point. There is not that much portland in it. And my clay is 5pH so alkalinity is mostly welcome. I won't put blueberry or blackberry in it, mainly veggies.
 

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