I ripped the lattice from four 4×4 cedar posts that were a “decorative feature” on the front of our house that we bought in 2003. After an estimated 30 plus years the posts had rotted at ground level but the majority of the wood was in excellent condition with very few knots. I fastened each corner with a stainless screw ( four in total) to stabilize the perimeter slats of the lattice panel and used Weldbond glue at each rail/stile intersection to fasten the assembly.

I did not have enough wood for the rails and support posts so bought new western cedar at the local building supply.