We have reclaimed DIY pallet vertical herb garden by using some rustic pallet skids lying in our backyard for nothing.
front porch: We actually used inch anchors with 2 inch “pan head” screws to attach it to the lattice into the wall. We could do this on the back porch
Redo planter boxes for deck maybe similar to this for herbs, lettuces and strawberries? Free-standing DIY Vertical Garden Window Boxes - also acts as privacy screen.
What a wonderful way to show off potted herb plants or flowers- a "tree" that holds twenty small pots on an exterior wall. Creative Ideas- plants to decorate your home and garden" via Lucid Life (article is written in Spanish)