
Building a DIY wood planter box is a great way to add some greenery to your outdoor space without breaking the bank. You'll need a few basic tools, such as a saw, drill, and measuring tape.
To get started, choose a design that suits your needs, like the simple rectangular design or the more intricate raised planter box design. The rectangular design is perfect for beginners, as it requires minimal cuts and is easy to assemble.
A typical rectangular planter box is around 6-8 inches deep, which is ideal for most plants. This depth allows for good root growth without taking up too much space.
You'll also need to decide on the type of wood to use, such as cedar or pine. Both options are durable and resistant to rot, but cedar is a better choice if you live in a humid climate.
A fresh viewpoint: Cedar Window Box
Preparing Your Materials!
To prepare your materials for a DIY wood planter box, you'll want to choose the right type of wood. Cedar is a great choice because it's rot and weather-resistant, and it's generally a great choice for outdoor projects.
For the frame, you can use rough-sawn cedar 2x4s to keep costs down. Just make sure to choose boards that are as straight as possible, with minimal twist and bend.
To get your wood smooth and ready for use, you can use a sander. Start with 80-100 grit and work your way up to at least 180 grit for a beautiful cedar surface.
Alternatively, you can use a planer to get the job done even more quickly if you have access to one.
Here are some types of wood you can use for your DIY planter box:
- Cedar
- Pressure-treated lumber
- Redwood
- Ipe (a hardwood)
Remember to choose wood that's suitable for outdoor use, and don't be afraid to sand down rough edges to get a smooth finish.
Assembly and Construction
To assemble and construct your DIY wood planter box, start by assembling the panels on a relatively flat surface. This will help ensure they are square and even.
Use a framing square to double-check the angles, and attach the panels together with 3-1/2" exterior wood screws. You can also use wood glue for added stability.
For long panels, add an extra upright support in the center to prevent flexing under weight. The 1x2 pieces should roughly line up with the top board to ensure uniform size.
Once all panels are assembled, join them together using a lock rabbet joint in each corner. Clamp the corners together to remove any gaps, and then add 2" screws through the short side panels into the 1x2 of the long panel.
To attach the bottom rails, position them at an angle to facilitate water drainage towards the center. Use wood glue and five screws to secure them in place.
Assemble All Sides
Assembling all four sides of the planter box is a crucial step in the construction process. To do this, position the second pre-assembled long side upside down on the table so that the side slats line up with the leg in the appropriate place.
Ensure everything is nice and square before using pocket screws to attach all eight slats to the second side. This will give your raised planter box a sturdy foundation.

Position the second pre-assembled long side upside down on the table so that the side slats line up with the leg in the appropriate place. Ensure everything is nice and square before using pocket screws to attach all eight slats to the second side.
You should now have all four sides assembled and your raised planter box is starting to take shape. This is a great moment to take a step back and admire your progress.
To attach the side slats to one of the pre-assembled long sides, start by flipping the long side upside down on the table and starting at the bottom, working your way up all four slats. Use a piece of wood to line up the back flush with the legs and then attach the side slats with the pocket screws.
Tip: Use a square to ensure your side slats go on squarely and perpendicular to the long side! Repeat this process on both sides so that all eight side slats are attached to one of the long sides.
Raised Bed
To start building your raised bed, map out where the garden beds will go with spray paint first. This will help you visualize your garden layout and make it easier to plan the arrangement of the beds.
You can choose to make different sizes of planter boxes, like we did with our medium (5’x3′) and large (8’x4′) boxes. This way, you can use the materials more efficiently and avoid waste.
Here are the materials you may need for a basic raised bed setup:
- 2x8x8 lumber (6 pieces)
- 2x4x4 lumber (6 pieces)
- 4x4 lumber (6 pieces, cut to 18″)
Keep in mind that the specific materials and quantities may vary depending on the size and design of your raised bed.
The Stand
To build the stand, you'll need to create pocket holes in the 2×2 front rails and the 1×2 support rails. This will allow you to assemble the stand securely.
Make sure to use the pocket hole jig at the correct settings: 1 1/2″ for the 2×2 boards and 3/4″ for the 1×2 boards.
It can be a bit tricky to reach the pocket holes, but using a right-angle drill adapter can make a big difference.
To attach the box to the stand, you can use wood screws through the bottom of the box.
On a similar theme: Olive Wood Boards
Finishing and Details
Sanding the wood before staining is a must if you plan on staining your planter boxes, as it helps the stain adhere better.
You can fill the screw holes with wood filler, but if it's not for "show", you can skip it like I did.
If you're using exterior paint, choose a smooth one like Black by Behr, which holds up amazingly well.
To protect the wood, consider applying a finish like Spar Varnish or exterior latex paint, and don't forget to add a third coat on the end-grain for extra protection.
For a decorative look, arrange the slats into a pleasing composition, taking into account wood grain, color, and contrast.
Adding Trim
Adding trim to your planter box is a crucial step in giving it a polished finish.
I always make sure to sand all the corners flush before adding the trim, to ensure it's seated well.
Cutting the trim with a miter saw is a must, especially when working with thin boards like Cedar. A circular saw just won't give you the precision you need.
To cut the trim, you'll want to cut a 45 degree miter on one end, then flip the board around and cut an opposing 45 degree miter on the other end.
Leaving the pieces long at first and then trimming them to final size based on actual dimensions is a good practice to follow.
Using a piece as a template for the second long piece of trim can save you time and effort.
Attaching the trim to the planter box with glue and 1 ½” brad nails is a solid choice. The 1x2 uprights are a great spot to drive in nails.
Making sure the edges of the 1x2s are flush with the outside of the panels is important for a smooth finish.
Don't worry if you notice gaps in the miter – a little sanding can fix it.
After installing the trim, give the outside of the planter box a good sanding with 80 grit sandpaper, focusing on the corners and trim.
Final Finish
Finishing and details are crucial steps in any woodworking project. You can stain or paint and seal the box and stand in the colors of your choice.
To protect the wood and give it a nice, clean look, apply a finish to both the frame and the slats. Two coats of exterior dark gray/black latex paint are recommended for the frame pieces, with a third coat on the end-grain for additional protection against water.
You can use a roller to apply the paint and avoid brush strokes. For slats, consider using a Spar Varnish to retain their natural color and look.
If you plan on using your planter box outdoors, don't forget to apply a spar urethane sealer to protect it from the elements. This will help extend the life of your project and keep it looking great for years to come.
Here are some additional finishing tips to keep in mind:
- Sanding the wood before staining will help the stain adhere better.
- Fill screw holes with wood filler and sand them down for a smoother finish.
- Touch up screw heads with paint to match the legs and surrounding area.
Design and Planning
To create a beautiful and functional DIY wood planter box, you'll want to start by choosing the right type of wood. Western red cedar is a popular choice due to its natural resistance to rot and insects.
Consider the size of your planter box, as it will depend on the space where it will be placed and the type of plants you want to grow. A larger box can be used for a more extensive garden, while a smaller one is perfect for a balcony or patio.
Measure your space carefully to ensure your planter box fits comfortably and doesn't obstruct any pathways or doors.
Raised Garden
Raised garden beds are a great way to grow your favorite fruits and veggies, and building them yourself can be a fun and rewarding project. You can use a variety of materials, such as Cedar from the home center and angle iron, to create a beautiful and functional planter box.
To start planning your raised garden, it's a good idea to map out where the garden beds will go with spray paint first. This will help you visualize your garden layout and see how many and what size garden beds will work best.
If you're looking to add multiple layers to your planter box, consider using natural materials like dead leaves and grass clippings to save money. You can start by filling the bottom with large branches and wood, followed by a layer of cardboard, and then top it off with topsoil.
Here are some materials you may want to consider for your raised garden planter boxes:
- 2x8x8 lumber (6 pieces)
- 2x4x4 lumber (6 pieces)
- 4×4 lumber @18″ (6 pieces)
Remember to choose the planter box sizes so that you have zero waste, and consider using a variety of sizes to create a visually interesting garden layout.
Small Wooden Plans
You can find step-by-step plans for small DIY wooden box planters online, including cutlists and diagrams.
These plans are often accompanied by detailed tutorials and videos that walk you through the building process.
If you're on a tight budget, you can also consider repurposing existing materials like railroad ties to create a makeshift garden.
For example, one person used railroad ties to create long planter boxes that worked perfectly fine for their garden last year.
To create a more permanent garden, you'll need to level the ground and add a fence, which can be done using 4×4 boards and wire fencing.
You can also use gravel to create a "floor" for your garden, which is a simple and effective solution.
If you want to create more elaborate garden planter boxes, you can always opt for DIY wooden plans, which are often available online.
These plans can be a cost-effective alternative to buying pre-made planter boxes, which can be expensive.
Recommended read: Extreme Tool Boxes Made
Modern Tabletop Design
As Anika says, nothing feels better than seeing something and saying "I can make that!" This is especially true when it comes to modern tabletop design.

A key aspect of modern tabletop design is simplicity and clean lines. This is reflected in the DIY modern tabletop planter project, which aims to inspire and empower beginners.
To achieve a modern look, consider using a minimalist approach to your design. This means keeping the number of decorative elements to a minimum.
Anika's goal is to inspire and empower beginners, which is why she's sharing her DIY project in the first place. She wants everyone to unlock their creative potential and experience the feeling that comes with making something.
Using a limited color palette is another way to achieve a modern look. This can help create a sense of cohesion and visual flow in your design.
Discover more: Timber Roof Trusses Design
Modern Planters
Modern planters can be made with just a few tools and some basic materials. The author of the example made modern slat wood planters using a miter saw, drill, and brad nailer.
You can create a planter that will last outside for a long time with durable waterproof wood finishes. Olympic products, in particular, come with a lifetime guarantee.
Suggestion: Planters for Succulent Plants
To make a planter, you'll need to cut your pieces into specific lengths. The author cut their pieces into the following lengths.
Modern planters can be made with a variety of materials, including pressure-treated wood. The example used (8) 2 x 2 pressure-treated baluster and (2) bundle 1 x 2 pressure-treated board.
Using the right tools can make a big difference in the quality of your planter. The author used a 3M sanding sponge to smooth out their wood.
Staining supplies can help you achieve the desired look for your planter. The author used Olympic Maximum Stain in Cedar Natural Tone and Olympic Elite Stain in Ebony.
Safety should always be a top priority when working on a project. The author wore safety glasses while working on their planter.
Consider reading: Wood Stain Dry Lighter
Removal and Cleanup
To remove your DIY wood planter box, start by disassembling it according to the instructions in the "Assembly" section.
You'll need to remove the screws that hold the box together, and take note of the order in which you removed them, so you can easily put it back together later.
Once you've disassembled the planter box, inspect it for any debris or dirt that may have accumulated during use.
Clean the box thoroughly with soap and water, making sure to remove any stubborn stains or residue that may have formed over time.
Use a soft-bristled brush to scrub away any dirt or debris that's accumulated in the corners or crevices of the box.
After cleaning, let the box dry completely before storing it or reassembling it.
If you notice any signs of rot or damage, consider replacing the affected wood according to the instructions in the "Materials" section.
Wood Video
If you're looking for a step-by-step guide to building a DIY wood planter box, I've got just the thing for you. The DIY Wood Planter Box Video is a great resource, offering a detailed video tutorial that shows you how to build this planter and two other similar planters.
You can expect to find a comprehensive tutorial and plans that follow the video, making it easy to replicate the project at home.
Frequently Asked Questions
What kind of wood do you make planter boxes out of?
We use durable, water-resistant woods like Cedar, Redwood, and Teak for our planter boxes, offering long-lasting performance and beauty
How do you waterproof the inside of a wooden planter box?
To waterproof the inside of a wooden planter box, consider adding a liner made of plastic, pond liner, or landscaping fabric to prevent moisture from seeping into the wood. This extra layer of protection helps extend the life of your planter box.
What do you put in the bottom of a wooden planter box?
Fill the bottom half of a wooden planter box with organic matter like wood, cardboard, and leaves to create a nutrient-rich base for your plants. Then add dirt and compost to support healthy growth.
What to plant in a wooden planter box?
You can plant herbs, fruits, vegetables, and annuals like tomatoes, peppers, lettuce, and flowers in a wooden planter box to add color and fresh produce to your space. Consider starting with easy-to-grow options like herbs and leafy greens for a quick and rewarding gardening experience.
How thick should planter box wood be?
Use lumber that's at least 2″ thick for a planter box to ensure healthy plant growth
Featured Images: pexels.com


