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.
is it ok the use pressure treated wood for gardens and raised beds. any copper into the soil and therefore, it's safe for all uses, including making garden beds.
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 .