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I'll talk about the treated lumber from the get-go because for many years, the CCA-treated wood was used until we discovered that the arsenic, chromium, and copper was leaching into soils. Pressure-treated wood is now processed in a more ecologically-friendly way and is deemed to have no ill effects on people or animals. Raw lumber - it's a little more expensive and it won't last as long as pressure-treated lumber, but then there's something to be said about peace of mind. Composite timber - Made with a few different material depending on the company, it's commonly made of polypropylene and wood fiber.
Recycled Plastic - Another long-lasting choice and it's nice to know it puts old plastic to the very best use, in my opinion. Brick - Brick beds turn out just as lovely as the rock kind, it just gives a different look. Concrete and Concrete Blocks - Both of these offer a less formal look - but permanent beds.
Beds made of lumber are usually attached joined at the corners with galvanized or stainless steel screws or bolts. Creeker01 writes: I found a slightly damaged section of prefab dog-eared fencing at my local hardware store. I cut the 6' x 8' section into thirds, leaving 2 foot high walls, then cut one of the thirds in half.
I think the whole plot cost me around $50, but I had to haul a lot of bags into the backyard of my subdivision.
Robert_in_Cleveland writes: a friend of a friend kindly gave me a tour of her amazing backyard one day last year. ChrisMcLaughlin writes: yourownvictorygarden ~ In may case, I should have looked it up on the EPA website first. MDGarden writes: After 2003, the EPA banned the use of copper arsenic in pressure treated wood.

There's only a few things that deserve some consideration before you put one or two together this spring. But be sure to use steel screws as the copper will react to aluminum ones, which will become corroded quickly. Some are made from recycled materials and can have UV ray protection to give it longer life. But there are some new products on the market that allow you to join lumber together without digging into the tool bucket. Re-inforced where needed, lined the now 4 x 8 foot box with plastic, then filled it with sphagnum, potting and manure. Back in the day (which wasn't that long ago *ahem*) pressure-treated wood was, indeed, a bad idea around veggies gardens. I've been wrestling with the "treated lumber" issue ever since I started using them (raised beds, that is). Weaved in a soaker hose on a timer, which connects through the damaged board, covered the dirt with weed-stop.
In fact, considering that they're still chemically treated, I still prefer not to use them. I started out using 2" x 10" x 12' but that got rather expensive for the number of beds I wanted to make.
That said, apparently there are still opposing view which is what brought my attention to the article in the first place.
After our Summer garden was finished, and it was time to start planning for the Fall, we decided to go with the raised garden bed method. Don't forget to check this helpful hardware before you purchase.I have to mention that some (okay, all) of the best raised beds that I've seen feature a ledge or cap that's been mounted to the top board of the bed. I have now switched to using 1" x 6" x 12' which cut the cost to build the beds by more than half.

These sitting areas can keep you out in the garden longer by making garden chores like weeding, cutting flowers, or harvesting more comfortable for you. I buried these 6" deep and supported the sides with wooden steaks spaced at 3' intervals, giving me beds raised 12" above the paths. I absolutly love raised bed gardening, it not only looks good but makes managing the garden so much easier.
Two compounds, alkaline copper quat (ACQ) and copper azole (CA-B), have now replaced CCA wood in the residential market. The copper keeps insects at bay, and the fungicide prevents soil fungus from attacking the wood. In ACQ, the fungicide is quat, which is also used in swimming-pool chemicals and as a disinfectant.
According to Miles McEvoy, who works in organic certification with the Washington State Department of Agriculture, no pressure-treated wood is allowed in soils used to grow organic food.
Reply michelle September 22, 2014 at 3:41 pmI look forward to seeing what you fill those boxes with. My raised beds are now three years old, and have (gasp!) BERMUDA grass growing up through them despite a double layer of thick planting fabric underneath the boxes. Reply George September 20, 2014 at 9:26 amI had very good luck going to a small local sawmill and buying a whole pile of unsalable lumber for $50.

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