Farmerboy wrote:Buy Tinfoil Duct Tape and wrap the wood with the Tape. The reflectorized surface of the tin foil tape will maximize light reflection inside the green house..
There are several different types of Chemicals used to pressure treat lumber, depending upon the intended use of the lumber. Some Chemicals are toxic, some are not. Each piece of pressure treated lumber is required to have a plastic tag stapled to the end with the codes for the type of chemicals used to treat that piece of lumber.
If the lumber has the codes ACQ, CA, SBX, or MBQ, they are safe to use in a green house or raised beds. Avoid all other codes as they will leach toxic chemicals.
Good to know, all the wood I have got has that on it, I talked to a person at a home show who represented PT wood and he said that all the stuff you get form the places like Home Depot are safe and made with copper. I know a person who made a house on a lake using telephone poles, I thought that may not be a good thing.