How to Build a Planter Bench

Add 2 inches of gravel in each hole and tamp it down to create a solid and level foundation for the planters. Add another layer and tamp it down, repeating as necessary until your bed of gravel sits 2 inches below ground level. Now add a ½-inch layer of sand or potting soil to make it easier to level your first course of each planter box.

TOH Tip: If you don't have a hand tamper, you can make do with a scrap block of 2×4. Use the end of the board to pack the gravel into a level field.