Great way to use up scraps. 👍👍 I took some boards from the bed of a 1969 dump truck, very rough, and cut three layers and epoxied them with coffee grounds mixed in and it turned out amazing.
Standard KD (kiln dry) is fine. If it has a green tint to it, it is pressure treated. The old pressure treated is toxic. New pressure treated are fine for garden beds. I still would turn pressure treated