Raised garden bed treated wood,small garden design magazine,what is home gardening - Reviews

03.08.2014
All told, by looking at the science, I do not think anyone needs to worry about growing vegetables in CCA lumber beds. Arsenic is no longer used in pressure treated lumber in the US and was outlawed several years ago.
MCQ is a newer treatment that is treated with particles instead of liquid and is supposed to be even more stable than ACQ. So I finished my raised bed, shoveled in 2 cubic yards of good top soil with peat mixed in and then ran across the pressure treated wood question. I think that as people get used to the idea that we most places nolonger use CCA, they will stop saying that PTL is bad for raised beds. My husband just built 3 raised beds out of pressure treated lumber purchased from our local Menards. I was worried because I am putting up a fence made from PTL and it is right next to my garden. Dip treated wood has only a thin surface layer of treated wood, the cores and any cut off ends are untreated and will rot like ordinary wood. I built a raised bed, vegetable garden using the 8′ pressure treat yawn post sold at Lowes. Now, if the galvanized mesh at the bottom of the gardens (to keep the moles from destroying my efforts) won’t kill me off sooner, I can stop worrying. You either need to use pressure treated wood, or a rot resistant (and expensive) species like teak, cedar, cypress, or redwood.
On February 12, 2002, under pressure by consumers, members of congress and the EPA, the wood industry agreed to stop using arsenic-based wood preservatives as of December 2003. I thank everyone for all the information, my husband insisted on treated wood for our raised beds, I do plan on lining them, but I no longer fear we made the wrong choice!
So using planters made out of new PTL (Copper azole-treated wood, also known as CA-B) is not a concern.
I have been working with a scientist to develop new liquid fertilizers for both soil and hydroponic gardening.
This is information on an actual study done at Ohio state university on using pressure treated wood with raised garden beds. Regarding the Eco wood treatment, beware that it immediately turns your nice new looking wood into an aged-looking greenish gray color. Re-using old deck wood would probably be OK as much of the leaching may have already occurred. To use this in your garden, where you grow food, is just one of the stupidest things I’ve ever heard of in my life.
I am doing more research on the Australian methods of treating wood but I noticed all the holier than thou comments on using cedar. I came to this site because I found out that a local composting facility is grinding up PT wood along with everything else and then marketing the finished compost to gardeners. One thing I found is 5 year old pressure treated fence posts totally rotted due to water rot.


The safety of pressure treated lumber for raised bed gardens has been examined by several researchers. From what I've seen, the consensus is that the chemicals do leach out of the wood into the soil and are uptaken by the plants in very small amounts. Of course, the primary concern with using pressure treated wood in raised-bed gardens has been with the arsenic in CCA- (chromated copper arsenate) treated wood. If you are shopping for treated lumber nowadays, I don't think you'll find CCA-treated material in the home centers anyway since its use was restricted by the EPA in 2004.
Q: Someone recently told me I should not plant vegetables in a raised garden made with landscape timbers. A renewed interest in locally-grown and organic produce has led to a raised bed garden craze. For raised garden beds, contractors and homeowners can find a large selection of domestic hardwoods at Schutte Lumber in Kansas City.
The type in CCA wood (inorganic arsenic) is more toxic than the natural types, but just for reference, it is already in the food you grow. Studies have been done showing most leaching only occurs during the first rainy season, and that it doesn’t leach more than a few inches from the wood. Save yourself a few hundred dollars and get pressure treated lumber for your raised bed or other garden projects. At Gardenaut I read a response as to what to build raised beds out of, which is regular lumber, because in ten years, you might want to change the design of your yard, anyway. Stains, sealers, etc, meant for decking, is meant to protect the wood from water than falls and runs off.
It would seem that risk of arsenic exposure from using pressure treated lumber is no greater than background. I just had some planters made, and found out they were built with new pressure treated wood. In the process of reading questions and comments from everyone posting here, I am far more comfortable building raised beds with PTL and have decided against using plastic to line them given the risks associated with plastic!
So if you like to poison yourself little by little then go ahead but don’t lie to people and say this wood is safe.
The studies on old Arsenic treated indicate very very low concentrations at even optimal leaching conditions; ie the wood was powdered. If you like you could avoid planting root veggies in that specific bed, but as you say, most of it should be leached out, and even if it wasn’t, there possibility of transmission is so ultra low. We have experts in family and health, community development, food and agriculture, coastal issues, forestry, programs for young people, and gardening. You probably know that treated lumber was once made to be rot-resistant with chromated copper arsenate (CCA).
Since this type material is not as rigid as wood you’ll need to drive two foot long pieces of one half inch steel rebar every thirty six inches along the outside of the planks to hold them in place as you fill the bed with soil. If you or your clients are looking to build a vegetable garden, a wooden raised bed is a terrific option.


This Northern California garden by Avant Garden has beds of varying heights made of wood that blends nicely with the terrain and adds visual interest. This wooden raised garden by Arterra LLP Landscape Architects takes advantage of the dramatic slope without contributing to erosion. Then you can build your beds and line it with plastic sheeting or roofing fabric or some other membrane to stop leaching, and you can not plant root vegetables in it or near the sides of it where the leaching take place.
You see, despite the tiny safety risk, CCA pressure treated lumber was banned for consumer use by the EPA in 2003. As a precaution, I decided to line the beds with 4ml visqueen plastic around the lumber so the soil won’t come in contact with the lumber at all.
Some people have brought up lining their gardens with plastic to prevent leaching from the PTL.
I work with a lot of reclaimed wood, and so I’m often encountering various species and processes. I am building a green house with landscape timbers (Which contains less treatment as post)as the uprights, sunk in little concrete with 12 ” high brick and mortar to hold the old windows I have been storing.
I decided to do a little reading before purchasing because I had heard the stuff about pressure treated lumber.
Therefore other treatment to prevent water adsorption may be a good idea for subterranean use. Our knowledgeable personnel can also guide towards the products and tips that will help you build your own raised garden beds.
Any pressure treated lumber manufactured for consumer use after that date has no arsenic in it. After using redwood from an old water tower to build two raised beds last year, I used a linseed oil that had carcinogens added to it. I’m now going to feel a lot more confident in offering designs built with pressure treated lumber.
I can only assume that nearly all the chemical it was used to be treated with would have leeched out by now. Pressure treated wood leaches preservatives into soil and plants and can not be used within 25 feet of plants according to current organic standards. Raised beds cannot be compared to fish and Mercury, because bioaccumulation is not an issue in raised beds. However since I want to make this bed part of the garden and possible grow herbs, I want to make certain it is safe.



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