Below is a building plan for a sturdy and budget-friendly raised bed. The bed is 8 feet by 4 feet and 14 inches high. The posts go 10 inches into the ground to provide additional support. Materials list: 12 8ft-long 2x4 boards (4 boards cut in half) 2 6ft-long 4x4 posts (each cut twice into 2-foot sections) 3" deck screws woven weed barrier and/or 1/4" wire mesh to keep gophers out (optional) 32 cubic feet of garden soil/compost (about 1.2 cubic yards) Lumber cost is about $55 (12 x $3.37 + 2 x $7.37, at Home Depot) source: https://www.youtube.com/watch?v=qIA-wuB4lFs