How about the newer plastic wood ???
Depending on how high you wish to go, with some pressure treated
4x4 and these boards, you are in business.
Richard Evans wrote:
I'd like to build my own wooden containers for growing vegetables. I
know you can't grow edibles in containers made from pressure treated
lumber, but are there other options?
I suppose I could just use pine and discard it when it rots, but how
about pine painted with exterior stain or other preservative?
How about plywood (non-PT)? Is it safe?