But then word started seeping out that those CCA chemicals weren’t so perfectly bound up after all, that some of them, in fact, migrated from the wood into the surrounding soil. And that’s when pressure-treated wood moved into the hot seat. In the garden, this includes use as bed borders or trim; support for raised garden beds; plant stakes; and compost bins. This fact sheet explains the most widely used method for treating wood, examines the possible risks from gardening uses of treated lumber, and makes recommendations for reducing any such risks. Wood treated by this method is also known as pressure-treated lumber and by the trade name Wolmanized. 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.
Save yourself a few hundred dollars and get pressure treated lumber for your raised bed or other garden projects. Many people choose treated wood to construct garden beds, retaining walls, walkways, fences, posts, decks and other items around their homes. I’ve got planter boxes that have 5 years on them with nary an issue. I used pressure treated for my garden bed.
Raised beds bring plants up closer to the level of the gardener and create a tidy and attractive appearance in the garden. But some gardeners fear that if you build your raised beds out of pressure-treated lumber, you won’t be able to eat the vegetables you grow. Treated Wood For Gardening: Is Pressure Treated Lumber Safe For A Garden? Regular lumber begins to break down within the first year if it comes in contact with the soil, so many gardeners used to use pressure treated wood for gardening, such as landscape timbers and railroad ties, which is chemically treated to withstand the weather. Use the search box below to find more gardening information on Gardening Know How:. Or for any planter box, for that matter, as you never know what the person after you wil use the boc for.
Using Pressure Treated Lumber In Raised Garden Beds
Is pressure treated lumber safe to use in applications like garden beds, compost stations, and chicken coops. It depends on who you ask. Although it had been sold for decades for use in outdoor construction and garden projects, lumber treated with Chromated Copper Arsenate (CCA) was banned for residential use in 2003 because of concern that arsenic could leach into nearby soil and contaminate plants and people. I am considering building raised garden beds for growing vegetables out of pressure treated wood (probably MCQ). Outdoor Lounge Furniture Outdoor Lounge Chairs Outdoor Dining Sets Fire Pits & Accessories Outdoor Pots & Planters Outdoor Rugs. I’ve had my pressure treated wood raised beds for my vegetable garden since 2005 and was recently made aware of the potential risks of using this kind of wood. If you are anywhere near a real lumberyard (not a big box store) or sawmill and you can get cheap, rough-cut, possibly second-quality boards, and you don’t mind rebuilding beds every few years, it may be cost effective to just build with this. Most pressure-treated wood used in outdoor construction in the United States contains chromated copper arsenate (CCA) (U.S. Consumer Product Safety Commision, 2002). Health effects from exposure to arsenic in CCA-treated wood depend on the concentration of arsenic present on the wood surface, the amount of time spent on the wood structure and hand-to-mouth behavior. Use alternative materials for these applications, such as metal for covers and cedar for spring boxes. I don’t think pressure treated wood is a good idea for garden beds considering that it is recommended to used gloves when handling the wood and masks when cutting it. After you build your raised bed planters, cover the inside with 4-mil. poly. Considerations when deciding whether to use preservative-treated wood in landscaping.
Can I Use Pressure-treated Lumber For Raised Beds?
Wolmanized wood has been used for decades for tomato stakes, grape stakes, mushroom trays, planter boxes, and bird houses with no known adverse effects. Estimated Risk of Skin Cancer from Dislodgeable Arsenic of Pressure Treated Wood Playground Equipment. Retaining wall with 2×12 pressure treated wood 2 by Humboldt Landscape, via Flickr See more about Retaining Walls, Treats and Landscaping.