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Q+A: Pressure Treated Wood

SUSAN ASKED:

”I have a newly constructed outdoor planter I'd like to use for veggies/herbs but it is constructed from pressure treated wood. Are there health hazards associated?”



Response:
Great question.

I'm no expert on pressure treated wood...but the industry association website says, "Do not use pressure treated wood where it may become a component of food or animal feed. For example, treated wood should not be in direct contact with silage."

To answer your question, I don't know whether there are health hazards. But I'd ask a few more questions before using it. I have sent a note to the association. If I get a response I'll send you a copy and include it in a future edition of the magazine.



I got that response: “There are no restrictions against using Pressure treated wood to build containers. We have a few recommendations.

  • Do not plant anything closer than 12’’ of the pressure treated wood.
  • Line your container with a breathable plastic liner.”

My take on the response? I haven’t read scientific studies about pressure treated wood, but the warning on the website along with the e-mail response prescribing a liner would absolutely rule it out in my own garden.

Steve Biggs









Steven Biggs
Gardener, Garden Writer, Garden Coach, Horticulturist

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