assembled planter box for chicken coop with wire grate to stop them scratching out greens but can still eat

Step 1: Pallet Deconstruction

be safe and use hammer and pry bar to remove pallet boards keep nails in the boards

Step 2: Reconstruct Pallet

use hammer to straighten nails if bent then proceed to connect all four corners so that each corner is nailed and braced against the other to form a square

Step 3: Plant

hopefully the square should be strong enough to hold some dirt and chicken poo for fertilizer. I stacked two squares of pallets but any number would do depending on how much dirt and how high you want it .throw some seed in water then wait