+22 Is Treated Lumber Safe For Raised Bed Garden References. He stated in a bulletin titled, treated wood in raised bed gardening, “scientific evidence and data have shown that using pressure treated wood for raised bed or box gardening is safe to adults and children in terms of the plants grown and used in these containers.” he Depending on your needs, budget, and growing zone, this may be a good option for you to consider.
Web there was a time when pressure treated lumber contained arsenic (cca) and was not considered safe for use in raised vegetable gardens because the arsenic leached out into the soil. Web with or without a plastic lining, pressure treated wood used in garden structures, such as raised beds, poses no significant hazard. 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.
