You can isolate pressure–treated wood by lining the inside of a bed with heavy plastic to prevent leaching of chemicals from the wood into the soil. Top your bed with boards of untreated lumber to make a flat top to sit on and to avoid contact with the wood, particularly if you have CCA-treated wood in your garden.
Yes, the "new" pressure treated wood is safe for use for raised garden frames. with a few precautions! Up until 2003, the most common preservative used for pressure treated wood was chromated copper arsenate (CCA), a compound using arsenic as its primary rot protectant.
I am concerned about using pressure treated wood around my veggies because. I remind every budding raised bed builder that bricks, field stone and pavers .
Can you use pressure treated lumber for the garden without fear the chemicals used in the. is it ok the use pressure treated wood for gardens and raised beds.