I wanted to spruce up our deck while adding a touch of greenery so I decided to create a deck railing planter. I had some leftover cedar wood from a deck project, which was perfect for this project.

This elevated planter box from Gardeners Supply Company includes rot-resistant cedar boards plus metal brackets, legs and screws. To simplify assembly, group matching parts together. The kit can be ...

In general, you don't need to treat cedar planter boxes before placing them outside. However, if you don't pretreat your cedar planter box, you'll probably notice some visible changes in the wood.