Ask a Question forum→treated lumber

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Detroit area
kristiyc
May 15, 2020 9:37 AM CST
I have treated lumber around my raised vegetable beds. It was put in last year and I want to know if I should replace the wood with cedar. The followup question is then: Do I need to remove all soil and plants currently growing there and start all over with new soil and plants?
Name: Sally
central Maryland
Seriously addicted to kettle chips.
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sallyg
May 15, 2020 9:48 AM CST
Treated lumber produced last year is not the same toxic compounds as what was used decades ago. I made new raised beds this spring with treated lumber.
i'm pretty OK today, how are you? ;^)
Name: Will Creed
NYC
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WillC
May 15, 2020 9:51 AM CST
Do you know what it was treated with?
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Name: Daisy I
Reno, Nv (Zone 6b)
Not all who wander are lost
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DaisyI
May 15, 2020 9:54 AM CST
Most of today's treated wood (you would have to check with the supplier to see exactly what chemicals were used to preserve it) is preserved with a copper based product, a common ingredient found in fungicides you buy at the store. Its not something you want to eat but, its not on the surface of the wood but deep inside (that's the pressure treated part) so should not be a concern to you or your veggies.
Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and proclaiming...."WOW What a Ride!!" -Mark Frost

President: Orchid Society of Northern Nevada
Webmaster: osnnv.org
[Last edited by DaisyI - May 15, 2020 9:55 AM (+)]
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Missouri (Zone 6a)
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Frillylily
May 15, 2020 9:56 AM CST
Treated lumber is safe to use if it is new. The older ones years ago had chemicals (arsenic and copper I think? ) that were found to not be safe.

I did read a study/experiment done by a university that grew tomatoes in treated lumber beds and then tested them to see if anything was found in the fruits, and they said there was nothing measurable. That was a couple years ago I don't remember now where it was. You can google to find similar information.

I just made mine out of treated lumber. and I am going to stain it and line it w plastic to help preserve it and because we have termites super bad here Sad

Name: Daisy I
Reno, Nv (Zone 6b)
Not all who wander are lost
Garden Sages Plant Identifier
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DaisyI
May 15, 2020 10:04 AM CST
Here is everything you ever wanted to know about pressure treated wood. The newer wood section is all the way at the bottom. Most of the preservatives are copper based.

https://www.epa.gov/ingredient...
Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and proclaiming...."WOW What a Ride!!" -Mark Frost

President: Orchid Society of Northern Nevada
Webmaster: osnnv.org
Detroit area
kristiyc
May 15, 2020 10:15 AM CST
Wow! I can't believe how quickly I got advice! Thank you all! I appreciate it so much! The wood bought last year was from Lowe's or Home Depot. Lowe's uses ACQ, Alkaline Copper Quartenary and Home Depot uses alkaline copper quaternary (ACQ), copper azole (CA) or micronized copper azole (MCA), according to the info I found when I googled it.
Name: Daisy I
Reno, Nv (Zone 6b)
Not all who wander are lost
Garden Sages Plant Identifier
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DaisyI
May 15, 2020 10:17 AM CST
Then you are good to go. Thumbs up
Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and proclaiming...."WOW What a Ride!!" -Mark Frost

President: Orchid Society of Northern Nevada
Webmaster: osnnv.org

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