In article ,
"JRYezierski" wrote:

What are folks using as the framework of their raised beds?

we got our hands on a western red cedar (Thuja plicata) pallet and will
try that

I'm trying some 2x10's rough hemlock pine.Be interesting on how long they
last in zone 5 Western Massachusetts.

Tsuga? Not very long, I'd wager.

Is the new copper treatment for pressure treated lumber any safer than the
old arsnic pressure treated lumber?

Cu or Zn bromate? By warnings posted on the label, no.