Q.Pressure Treated Pallets
“First, be sure that the pallet you have chosen is not pressure treated,..” This is alarmist without also providing more info. HOW is someone supposed to find out whether a pallet is or is not pressure treated? And then what?
Certified GKH Gardening Expert
Pressure treatments are always a type of copper based material. Copper in such forms is highly toxic to soil life and plants, and leaches from the wood very easily. Plants will take this up in the roots, and either suffer from them, or pass the copper agents into their fruits and other plant parts. If you intend to consume the plants, then you will be consuming the copper preservatives, since they cannot be broken down by the plants.
Usually, pressure treated wood does not decay, and will have some sort of greenish or blue hue from the oxidizing copper. Sometimes, they have a label.