How to make this lovely and practical strawberry planter out of a single pallet. Probably the best pallet planter tutorial out there
DIY Vertical Planter Garden. Something I would do differently, or add to it, is support under each planter. I worry the weight of the dirt, water, and plants will eventually concave the planters. Adding one more piece of wood (obviously cut into proper lengths) wouldn't cost that much more for a little more security.