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Is Pressure Treated wood safe for raised gardens?


By Gkorh

United States Us

I am getting mixed opinions. I understand the formulation for this kind of wood has changed. Can anyone give me an 'authoritative' answer? Thx.



its safe but be ready to change it quite often as wood rots easily next to soil unless you do one course of bricks to keep it of the soil and line the inside woth polythene.

29 Jul, 2009


You don't say specifically where in the US you are, and depending on where you are the formulation of chemicals used to treat the wood is different.
Wood sold in most southern markets is more heavily treated, and wood sold in California has to be treated with only approved chemicals.
In answer to your question, treated wood can be used for raised beds, but it does have a "life" and will need to be replaced eventually, and because the wood does break down eventually, releasing the chemicals into the soil, most people do not want to use them when food will be grown.
Hope this helps!

30 Jul, 2009


Do you mean the treated pine? Well, here everyone uses them for landscaping, as we live in the hills and many gardens are terraced. They are flower bed edges, retaining walls, etc. I have them too, they've lasted 10 years already and no sign of breaking down. Yes, earth is build up against it.

30 Jul, 2009

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