The Forum

Get help, share your knowledge

You are not logged in

Burke's Backyard Forum > Growing fruit and vegetables  
Author Posts  

xero
Forum newbie - be nice!

Posts: 1
Location:
Registered: October 2007

Vegetable patch - treated pine

Posted 2391 days ago

We have a raised garden bed made of treated pine slabs. Is it safe to plant vegetables/herbs in this garden bed? The bed has been there 10 years. Will chemicals leach from the treated pine into the ground and make eating the vegetables unsafe?

2
1


Alert moderator

 

sherpa
Forum regular

Posts: 47
Location:
Registered: September 2007

RE: Vegetable patch - treated pine

Posted 2391 days ago

I've been using treated pine sleepers for a raised garden bed for the past ten years or so and haven't had any problems. I think it's only when the logs are burned that there's a problem but I could be wrong.
_________

1
2


Alert moderator

 

wookster
Forum newbie - be nice!

Posts: 8
Location: Brisbane
Registered: September 2007

RE: Vegetable patch - treated pine

Posted 2390 days ago

I believe it is mainly when the treated pine is burnt that there is a big problem. However, many years ago when I had chooks I was told in no uncertain terms not to use the sawdust of treated pine in their litter. I'm guessing small amounts of arsenic (I think that's what the main probelm is) could be leeching into the soil over time as the logs sit there. The amount may be negligable but I wouldn't want to push my luck. Personally I think I would use sleepers to raise beds and steer clear from treated pine. These poisons tend to build up over time.

1
0


Alert moderator

 

Blossom
Forum newbie - be nice!

Posts: 5
Location: Western Sydney
Registered: October 2007

RE: Vegetable patch - treated pine

Posted 2389 days ago

Oh wow Im all new to this Vegie Garden thing.. I just started last month.. And well i would never have even thought about the treated pine leaking out in through the soil and into the vegies.. Are all pine sleepers or logs treated???
_________
Hugs Blossom

1
0


Alert moderator

 

pomolo
Forum legend

Posts: 1142
Location:
Registered: September 2007

RE: Vegetable patch - treated pine

Posted 2386 days ago

I don't think they are allowed to use any poisons in the treatment of pine now. But check it out throughly.

1
0


Alert moderator

 

sanity
Forum newbie - be nice!

Posts: 20
Location: 3977
Registered: October 2007

RE: Vegetable patch - treated pine

Posted 2370 days ago

I checked with my local bunnings store and they suggested red gum sleepers, they do rot eventually because they are not treated, but they are reasonably cheap.
I planted 3 veggie beds 3 weeks ago and they are going great guns and I know there are no chemicals.. Just a thought hope this helps
_________
Too much soil... not enough plants

0
1


Alert moderator

 

Laura5
Forum newbie - be nice!

Posts: 4
Location: Mt Macedon Victoria
Registered: October 2007

RE: Vegetable patch - treated pine

Posted 2367 days ago

Treated pine will leach toxic chemicals into the soil, These chemicals will be in time absorbed by the vegies, you eat the veggies and eat the poisons. Not good.
Please use something else. Most organic gardeners will not have treated pine anywhere on their property.

0
1


Alert moderator

 

michelle001
Forum newbie - be nice!

Posts: 2
Location: South East NSW
Registered: October 2007

RE: Vegetable patch - treated pine

Posted 2365 days ago

Treated pine contains copper chromium arsenate. The arsenic is carcinogenic - cancer causing. It is not safe to use, unless you line the inside of the vegetable bed with thick builders plastic to prevent the chemicals from leaching into the bed and being taken up by the plants.

0
1


Alert moderator

 

jps160869
Forum newbie - be nice!

Posts: 2
Location: sydney australia
Registered: November 2007

RE: Vegetable patch - treated pine

Posted 2353 days ago

Hi,
No one advises using treated pine sleepers without a barrier of some sort. We have two 1.6m x 1.6m rasied veggie garden beds made with 3 rows of treated pine sleepers. We have lined the inside with plywood. Don't know whether we are still poisoning ourselves?????????????????

0
1


Alert moderator

 

yelleena
Forum newbie - be nice!

Posts: 2
Location: South Australia
Registered: November 2007

RE: Vegetable patch - treated pine

Posted 2337 days ago

Treated pine is not safe to use. It leeches poison into the soil which is redilly absorbed by the veg you are about to eat so avoid it like the plague. You are better off to use sleepers or a hard wood of some kind. However in 5 - 10 years they will need replacing. another alternative is to use aerated concrete or heable. These are light and even carvable, use a face mask and goggles if cutting or carving to shape. Its great stuff and works out very cheaply, no problems with leeching stuff into soil and makes a great retaining wall too.
_________

0
1


Alert moderator

 

BudKrone
Forum regular

Posts: 43
Location:
Registered: September 2007

RE: Vegetable patch - treated pine

Posted 2336 days ago

The use of CCA (Copper Chrome Arsenate) is toxic and should not be used. I have heard that they are going to be phased out. The new sleepers are now treated with ACQ and I think are readily available.
In regards to Hebel block they have to be protected with a suitable water proofing compound. They cannot be wet all the time as they will decay but treated properly they can last.
Cheers Bud.
_________

0
1


Alert moderator

 

Ben1980
Forum newbie - be nice!

Posts: 2
Location: 5009
Registered: November 2008

RE: Vegetable patch - treated pine

Posted 1969 days ago

CSIRO SAY:

Studys have shown that preservatives such as CCA ( copper chromium & arsn) are not absorbed into food crops like grapes, tomatoes and cucumbers.
only some root crops have been reported to pick up small ammounts of arsenic from CCA but is it is in an organic non toxic form in any case is largely removed by peeling the vegetables.

Source WWW.CSIRO.au

Go wild with using treated pine!!!!
These are the facts!!!!

0
0


Alert moderator

 

hutcho
Forum celebrity

Posts: 752
Location: Penrith area n.s.w.
Registered: September 2008

RE: Vegetable patch - treated pine

Posted 1968 days ago

Ben1980 is spot on.Almost.CCA is a complexed inorganic compound,which translates as very difficult to break down.Treated timber should never be burned,as this produces extremely toxic Oxides which are readily absorbed via skin or lung.The reason why CCA is (wisely) no longer used is that direct contact does result in leaching out of the Arsenic by (acidic) perspiration.If you have treated pine veggie borders(as I do),DONT PANIC! Also please note that plywood contains vastly higher levels of far more potentially dangerous compounds.Should never be used as a veggie border,and never chuck it on the fire.
_________
Experience is what you get when you dont read the instructions first.I'm a LEO.I am experienced!

0
0


Alert moderator

 

Lizabethtoo
Forum newbie - be nice!

Posts: 3
Location: Phillip Island
Registered: December 2008

RE: Vegetable patch - treated pine

Posted 1957 days ago

Ben 1980, and Hutcho - Many thanks and sweet boquets to you. Hubby and I have just paid a fortune to have three planter tubs constructed for some veges. Acting on the advice of the timber salesman we chose treated pine - only to discover that he was incorrect about treated pine not now using cca. We discovered the tag on the timber after purchasing and cutting it. We have now sealed the tubs with two coats of timber treatment, and plan to line them with thick plastic. Thanks to you Ben and Hutcho, we feel safe in continuing wth the veggie project. Cheers,and have a great Christmas.
_________
Smile.It makes others wonder what you are up to.

0
0


Alert moderator

 

hutcho
Forum celebrity

Posts: 752
Location: Penrith area n.s.w.
Registered: September 2008

RE: Vegetable patch - treated pine

Posted 1957 days ago

Hi Lizabethtoo.And Mr.Lizabethtoo,too.Thanks and you two happy Christmas too.Sorry,it was there ,so I had to use it.I'm sure you two would too.
_________
Experience is what you get when you dont read the instructions first.I'm a LEO.I am experienced!

0
0


Alert moderator

 

Lizabethtoo
Forum newbie - be nice!

Posts: 3
Location: Phillip Island
Registered: December 2008

RE: Vegetable patch - treated pine

Posted 1956 days ago

LOVED IT HUTCHO!!!
_________
Smile.It makes others wonder what you are up to.

0
0


Alert moderator

 

BeckyC
Forum newbie - be nice!

Posts: 1
Location: CT7
Registered: February 2009

RE: Vegetable patch - treated pine

Posted 1886 days ago

Hello!
Firstly I want to Thank you for not allowing me to poison myself, husband and toddler!! It was only by stumbling across these posts that I knew anything at all about pt timber (ignorantly I hadnt even considered it)

Anyhow after reading this I phoned up the company I had purchased all the pressure treated timber with (who had infact recommended I use this for the veg patch....that was my saving grace!) and asked them what it was treated with to which they replied they werent sure of the name but they know for sure it is an arsenic based product.....arghhhhhhhhhhhhhhhhhhhhhhhhhhhhh!

Anyhow
,
not having much money left me in a dilemma and now with pt timber that I couldnt use, they wouldnt give me my money back but would replace them(with the exception of the ones I have cut up) with untreated timber...(I appologise to people who are against using this because of the trees.....trust me I do feel bad and this has been one hard lesson!) but now do you think I can find anywhere what I can now treat this with, if anything, to stop it rotting fast and without poisoning anyone.

Any ideas greatfully recieved.

Thank you in advance

Becky

0
0


Alert moderator

 

Irmis
Forum newbie - be nice!

Posts: 3
Location:
Registered: March 2009

RE: Vegetable patch - treated pine

Posted 1864 days ago

Hi there!

Use natural wood and coat it with Linseed Oil. Have a look at what we use as raised garden beds: www.kiwicollars.co.nz

I am myself quite dissapointed with what all these DIY centres offer (i mean Raised beds) - very expensive, bad quality timber, etc...

0
0


Alert moderator

 

Jericho
Forum newbie - be nice!

Posts: 3
Location: 4107
Registered: March 2009

RE: Vegetable patch - treated pine

Posted 1862 days ago

These are Helpfull posts i my self have been constructing garden beds with h4 teated pine and treated Hardwood, fortunatley i read that sealing the timber before filling would stop or minimize the leaching, we used 2 coats of decking oil stained to get rid of that green pigment then lined with geoteck liner i have had no illefects from a lovley crop of cabbages and tomatoes ,carrots ect .does anyone know the side effects of caa poisoning are cant be bad cause the damn catterpillars that are eating my cabbages look healthy enough :)

Good luck

J

0
0


Alert moderator

 

Jericho
Forum newbie - be nice!

Posts: 3
Location: 4107
Registered: March 2009

RE: Vegetable patch - treated pine

Posted 1862 days ago

ohh i forgot to mention a cheaper form of sealing would be some watered down Bond Crete( 2 heavy coats at least or nail some fibro to the inside of the boxes and paint it with acrylic paints although the fibro will need replacing every few years as the constant watering can delaminate it if not sealed properly. seal the internal corners with gap filler before painting too.

all the best
J

0
0


Alert moderator

 

hortman
Forum newbie - be nice!

Posts: 1
Location: 3844
Registered: March 2009

RE: Vegetable patch - treated pine

Posted 1847 days ago

Hi Irims,
are you happy with your garden collars, as we are thinking of getting some. To avoid the use of treated pine in any form.

Are they as easy as they look to install and have you found them high enough to retain the soil and still allow room for your vegies to grow.

Thanks

0
0


Alert moderator

 

hutcho
Forum celebrity

Posts: 752
Location: Penrith area n.s.w.
Registered: September 2008

RE: Vegetable patch - treated pine

Posted 1843 days ago

If you use untreated timber coated with vegetable oil(e.g. Linseed, Castor, Olive,etc.,) you are offering the termites an entree. Bondcrete is basically a Polyvinylacetate Copolymer. Acryic paint is based on Polyvinylacrylate. Google up the breakdown products of Vinylidene Chloride and Methyl Methacrylate. You may be unpleasantly surprised. But then put the whole thing into perspective. If you were to eat all of your house internal walls, what would kill you first, the Gyprock or the paint?
_________
Experience is what you get when you dont read the instructions first.I'm a LEO.I am experienced!

0
0


Alert moderator

 

Ozmac
Forum stalwart

Posts: 181
Location: Sydney
Registered: September 2007

RE: Vegetable patch - treated pine

Posted 1834 days ago

This Burke's Backyard fact sheet on treated pine might help sort out the myths from the worries, etc. There's a link to it in the magazine articles section on the website, but hopefully this link will work.

http://burkesbackyard.com.au/article.ph
p?id=6079


_________
I'm a blogger! http://gardenamateur.blogspot.com

0
0


Alert moderator

 

GoldGarden
Forum newbie - be nice!

Posts: 1
Location: Kalgoorlie WA
Registered: April 2009

RE: Vegetable patch - treated pine

Posted 1831 days ago

I'm going to use rocks to line my raised vege beds. All this talk of chemical leaching from CCA, paints, Boncrete is scary. I think we should just think back to nature - and what's more natural than rocks? I'll just have to keep an eye out for snails hiding in convenient nooks.
_________
Gardening on the Golden Mile

0
0


Alert moderator

 





© 2007-2014 CTC Productions, All Rights Reserved
Home | Message Board | Fact Sheets | Members | Magazine | CTC Facilities | About Us | Privacy Policy | Contact Us