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“Not for ground contact” lumber for raised garden

Posted on 3/9/21 at 9:16 pm
Posted by FieldandStream1
Shreveport
Member since Feb 2012
199 posts
Posted on 3/9/21 at 9:16 pm
Bought treated pine “not for ground contact” 2x6s and built 2 raised garden beds in my backyard. Put them directly on the soil. Didn’t pay attention to the label on the lumber and only noticed it when I was almost done with the project.

Are they going to be okay or rot quickly? ? Anything I can do to increase the lifespan of the beds? Thanks
Posted by Martini
Near Athens
Member since Mar 2005
48853 posts
Posted on 3/9/21 at 9:18 pm to
3 years.

That’s what I got out of mine and I could have stretched another year but they will go on you. I didn’t want to try to treat them I just rolled with it.
Posted by TygerDurden
Member since Sep 2009
1850 posts
Posted on 3/9/21 at 9:28 pm to
quote:

3 years


3 to 4 years could be right. I guess it will depend on the area of the country. Damn termites down here are hearty and seem to be able to eat some of this treated wood. Rot will be an enemy as well. Next time maybe go with cinder blocks. Doesn’t look as good but it will be there a long time.
Posted by gumbo2176
Member since May 2018
15158 posts
Posted on 3/9/21 at 11:30 pm to
A friend of mine always used old railroad crossties to border his raised beds. He'd line the inside of the ties with a couple layers of heavy duty plastic first and then fill them with soil.

I just use treated lumber for mine and the one I have in my back yard for root crops is about 10 years old now, but showing its age and I'll replace it this fall.
Posted by LSUA 75
Colfax,La.
Member since Jan 2019
3705 posts
Posted on 3/10/21 at 7:31 am to
I built 10 raised beds with Trex composite deck boards 15 years ago and they’re holding up well.
Cost about $100.00 a bed but it’s been worth it as it turns out.
Posted by Salmon
On the trails
Member since Feb 2008
83583 posts
Posted on 3/10/21 at 7:35 am to
quote:

Anything I can do to increase the lifespan of the beds? Thanks


you could wrap the inside of the boards with felt paper

I've had multiple 2x12 treated raised beds for 4 years now and they are still in good shape

I'll probably go with cinder blocks for my next beds though
Posted by southern686
Narnia
Member since Nov 2015
883 posts
Posted on 3/10/21 at 7:55 am to
3-4 Years as said IMO sounds about right.

Could always seal them with some sort of product or paint them to help extend the life you get out of them.
Posted by doublecutter
Hear & Their
Member since Oct 2003
6589 posts
Posted on 3/10/21 at 9:31 am to
Google "Coppertox for wood".

Coat the boards before cutting up to build the beds. Touch up cut ends after building.
Posted by SonOfSlickWillie
Member since Nov 2016
65 posts
Posted on 3/10/21 at 3:27 pm to
I did the same thing - not paying attention to the label. I've gotten 5 years out of my two beds and think I can get 1 more year. I'll probably replace both of them next spring.
Posted by RaginCajunz
Member since Mar 2009
5361 posts
Posted on 3/10/21 at 4:16 pm to
Not necessarily helpful in your case, but related. I built my boxes out of a double stack of composite decking. All the flexibility of shapes and sizes with wood, but I'm about 10 years in on mine so far with just some warping here and there.

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