Domain: tiger-web1.srvr.media3.us New raised garden beds - what type of wood to use? | Page 2 | Home & Garden
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re: New raised garden beds - what type of wood to use?

Posted on 3/17/23 at 6:50 pm to
Posted by Art Vandelay
LOUISIANA
Member since Sep 2005
11472 posts
Posted on 3/17/23 at 6:50 pm to
Landscape Timbers are treated. Treated lumber won’t hurt anything so use them if you want. It also doesn’t work for ground contact, so it will rot. Might as well use untreated pine. Just redo every few years.
Posted by armsdealer
Member since Feb 2016
12291 posts
Posted on 3/17/23 at 7:37 pm to
I use cedar fence pickets. They are cheap and last long enough. I rarely have the bed directly on the ground though, most are up off the ground.
Posted by LSUA 75
Colfax,La.
Member since Jan 2019
4818 posts
Posted on 3/17/23 at 11:15 pm to
I built mine out of Trex composite deck boards.Like Ragin Cajunz ,I put them two high.Built them in 2003 and they’re holding up well.

It cost me $100/ bed (4x12) but I figure it’s worth it not to have to replace them every few years.
Posted by CatfishJohn
Member since Jun 2020
19497 posts
Posted on 3/18/23 at 8:02 am to
Metal feed troughs from tractor supply

Pre-built beds!
Posted by eng08
Member since Jan 2013
6005 posts
Posted on 3/18/23 at 8:35 am to
That’s abt the same price as 2x12’s treated.
Posted by Turnblad85
Member since Sep 2022
5079 posts
Posted on 3/18/23 at 10:42 am to
quote:

built new ones this year. I used metal roofing i had so that the soil doesn't come in contact



Those look great. And should last a good long while.
Posted by gumbo2176
Member since May 2018
19869 posts
Posted on 3/18/23 at 3:13 pm to
I used 2x12 treated lumber to build my 12x4 ft. raised bed for root crop stuff like beets, garlic, onions, etc. in 06 and they are working for me.


Yes, they've weathered a good bit and will need replacing in the next year or two. Only advice I'll give and will use is when replacing them I will put a cross member in the center across the width to help keep the long sides from wanting to bow out over time.
Posted by sc2anni
at my desk
Member since Feb 2023
583 posts
Posted on 3/19/23 at 7:07 pm to
I made a raised garden with animal watering tanks for farm stores and just leave out the drain holes so they have some drainage so the plants down drown.

Have you ever heard of Hugelkultur? You set rotting logs in the bottom of the tank then smaller branches and rotted leaves and finally your soil on top. I'm going to put my rhubarb in that tank.

The proponents of that say that the rotting wood products hold the moisture well.
Posted by CarRamrod
Spurbury, VT
Member since Dec 2006
58419 posts
Posted on 3/20/23 at 12:23 am to
quote:

You could also build corrugated metal bed for pretty cheap that will last longer.
northeen tool has prefab ones. I picked up 3 -3x8 ones when they went on sale for 40 bucks each.
Posted by MoarKilometers
Member since Apr 2015
20953 posts
Posted on 3/20/23 at 3:31 am to
quote:

Pressure treated wood used to contain arsenic. But it hasn't for 20+ years.

I see a lot of tags on the lumber I work with saying CCA, for chromated copper arsenate. Granted it's not your run of the mill shite from depot or lowes, but they absolutely are still using aresnic to treat lumber today, mainly for dock building.
Posted by PillageUrVillage
Mordor
Member since Mar 2011
15865 posts
Posted on 3/20/23 at 6:43 am to
quote:

Granted it's not your run of the mill shite from depot or lowes, but they absolutely are still using aresnic to treat lumber today, mainly for dock building.


Yes, there are still some specific commercial and industrial markets that use it. But like you said, you won’t see it in the box stores.
Posted by CAT
Central Arkansas
Member since Aug 2006
7285 posts
Posted on 3/20/23 at 9:27 am to
quote:

Have you ever heard of Hugelkultur? You set rotting logs in the bottom of the tank then smaller branches and rotted leaves and finally your soil on top.


I'm doing that this year but without a container. Just finished digging it our yesterday; 30 feet long by 4 foot wide. I'll start setting old logs and fallen branches this evening.
Posted by MLU
Member since Feb 2017
1686 posts
Posted on 3/20/23 at 8:25 pm to
Pressure treated wood before 2003 contained trace amounts of arsenic. I just built some beds with treated lumber, but I lined them with a 6mil liner anyway. If I could redo it, I would have placed concrete pavers on the ground and then placed the wood on that to keep it elevated a bit and extend the life.

Cedar is probably the best way to go, but that shite is still kinda pricey and I'm not trying to grow $500 tomamtoes.
Posted by Dingleberry Dan
Member since Mar 2016
18 posts
Posted on 3/20/23 at 9:24 pm to
Thanks for all the ideas and comments, they are very much appreciated. I think I have settled on making the beds with cinder blocks. It’s hard to pass up the price and longevity. Initially, I was pretty dead set on using cedar but it’s just so much more expensive and I don’t trust that they won’t rot in 3-5 years tops. I will try and remember to share some pictures once I get them built, if anyone is interested.
Posted by Bandit1980
God's Country
Member since Nov 2019
4561 posts
Posted on 3/21/23 at 10:43 am to
I have 9 12'X4' boxes built out of 2"X12" treated and 2 1'X12' green bean trellis boxes out of same that have lasted 4 years first build and 3 years now second build. I just re-build around the existing boxes when needed. all works well for me.
Posted by gumbo2176
Member since May 2018
19869 posts
Posted on 3/21/23 at 11:56 am to
About 30 years ago one of my friends got hold of old railroad crossties that he stacked 2 high to make his raised beds in his yard.

Those things were loaded with creosote so he stapled a couple layers of heavy duty plastic to cover the inside of the boxes and filled them with composted material.

I wouldn't use them for that purpose, but it worked fine for him and his family with great crops of vegetables all year long.
Posted by cgrand
HAMMOND
Member since Oct 2009
47700 posts
Posted on 3/21/23 at 5:47 pm to
quote:

The proponents of that say that the rotting wood products hold the moisture well.
whenever i lose a big tree (unfortunately ofter, i had a few dozen old willow oaks) i build new beds around the stumps. as the stumps rot they add nutrients back to the bed and as you noted, they act as a giant water catch
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