this post was submitted on 20 May 2024
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They're called Landscape Timber, if it helps you search. I found them quite cheap at my local hardware megastore. But beware of treated lumber if you use them for vegetables!
Why? Chemicals leach into the soil?
Most green treated lumber is coated with chemicals to preserve how long they last, eventually... those break down and go into nearby soil. We used the same thing, we left some older green landscaping timbers and just lined them with thicker plastic and replaced the clay-like soil
And into the produce, yes. Might also be harming the good soil bacteria and fungi that keep plant roots healthy.