This project was built and designed by Jonny from Jonny Builds. It’s a clean, straightforward planter box made from aromatic cedar, ideal for growing vegetables, herbs, or flowers in a small space.
The design combines function with modern style, making it a great addition to any patio or backyard. It’s also compact enough for beginner woodworkers and easily adjustable based on your needs.
Watch the full video and subscribe to Jonny’s channel:
Materials and Wood Selection
Jonny used aromatic cedar for this project because of its durability and resistance to rot. Other options like pine or pressure-treated lumber can work depending on your budget and preferences.
Most of the structure is made using one-by-three boards, which are easy to handle and join together. You can mill your boards yourself or purchase pre-cut stock to simplify the process.
Preparing the Boards
The first step involves cutting all the boards down to manageable sizes. Jonny flattens the edges using a jointer, then rips them to width for consistency.
If you’re not milling your own lumber, selecting clean, straight boards from the store can save time. Either way, you’ll want to pre-sand everything before assembly to reduce finish work later.
Making the Panels
With the boards prepped, Jonny glues several side by side to create wide panels. These panels are later cut into the individual sides of the planter box.
Once the glue has dried, any squeeze-out is scraped or sanded off. Sanding also helps clean up the surface and ensures each panel is flat and ready for cutting.
Cutting the Legs and Trim
A track saw or circular saw is used to break the panels down to size. Measurements are double-checked for square cuts and proper fit before moving to the trim and leg components.
The legs are cut to match the thickness of the panels and provide a solid base. Trim pieces are ripped to length and help frame the top edge and sides of the planter.
Assembly and Joinery
Before assembly, Jonny marks locations for pocket holes to join the panels together. He uses outdoor-rated screws to ensure the joints will last in exposed conditions.
The panels are clamped and glued, with time allowed for the glue to set. This helps prevent slipping when the screws are driven in during final assembly.
Attaching the Sides and Trim
Side panels are positioned and joined using the trim pieces to guide spacing. The top trim is attached with a few screws, since it doesn’t support weight but helps define the finished look.
Once one side is complete, the same process is repeated for the opposite panel. The trim pieces add a clean frame to the top and make the planter look polished.
Adding Modern Accent Strips
To give the planter a modern touch, Jonny installs decorative strips on the sides. These are arranged in descending lengths and spaced evenly using a simple spacer block.
The strips are secured with glue and brad nails for a quick and effective bond. This simple design element adds visual interest and makes the planter stand out.
Sanding and Finishing
After assembly, the box is sanded thoroughly to smooth any rough edges or corners. A small roundover on the edges can improve both appearance and comfort when handling.
Jonny finishes the wood with Total Boat’s Halcyon varnish, which offers moisture protection and highlights the natural grain of the cedar. Multiple coats are applied for durability, especially if the box will be exposed to sun and rain.
Preparing for Soil
Before filling with soil, the planter is lined with nylon poultry netting and a layer of polyethylene plastic. This combo prevents soil loss while allowing for drainage.
Small holes are poked in the bottom of the liner to help excess water escape. These layers protect the wood while maintaining healthy growing conditions for your plants.
Ready for Planting
Once complete, the planter is ready to be filled with soil and used for flowers, vegetables, or herbs. Raised beds offer improved drainage and make gardening more accessible in tight spaces.
This box design can easily be scaled up or down to match your space. It’s also light enough to move when empty, making it easy to reposition throughout the season.
Want to See the Full Build?
Get the plans here: https://www.jonny-builds.com/diy-modern-cedar-planter.