This step by step woodworking project is about wooden modern rectangular planter box plans. This is a rectangular planter box that is both easy to build and has a beautiful minimalist design. If you want to add some decorative plants to your deck, this planter is a good choice. You should consider investing in weather resistant lumber (cedar, redwood), as the components will be exposed to the weather elements. See my other DIY projects HERE.
We recommend you to invest in the best materials you could afford. Therefore, you should buy weather-resistant lumber, such as pine or cedar. Always take accurate measurements before adjusting the size of the components at the proper size. Drill pilot holes trough the components before inserting the wood screws, to prevent the wood from splitting.
Made from this plan
Modern Rectangular Planter Box – Free DIY Plans
- A – 4 piece of 2×2 lumber – 24″ long POSTS
- B – 2 pieces of 3/4″ plywood – 17″x18 1/2″ long, 2 pieces – 18 1/2″x37″ long WALLS
- C – 10 pieces of 1×4 lumber – 17″ long, 10 pieces – 37″ long SLATS
- D – 2 pieces of 1×2 lumber – 37″ long CLEATS
- E – 9 pieces of 1×4 lumber – 17″ long BOTTOM
- F – 2 pieces of 1×2 lumber – 17″ long, 2 pieces – 37″ long TRIMS
- 1 piece of 2×2 lumber – 8′
- 1 piece of 3/4″ plywood – 4’x8′
- 8 pieces of 1×4 lumber – 8′
- 2 pieces of 1×2 lumber – 8′
- 2 1/2″ screws, 1 5/8″ screws
- 2″ nails, 1 1/4″ nails
- wood filler , wood glue,
- hardware cloth, staples
- vegetable soil
- Safety gloves, glasses
- Miter saw, jigsaw
- Chalk line, tape measure, spirit level, carpentry pencil
- Drill machinery and drill bits
- One Day
How to build a rectangular garden planter box
The first step of the project is to build the side panels for the square planter box. Therefore you need to cut a piece of 3/4″ plywood at 17″x18 1/2″. Add glue and then attach the 1×4 trims with 1 1/4″ nails. Place a piece of 1/4″ plywood between the slats, so you create even gaps. Align the edges with attention.
Repeat the process for the front and back walls of the planter box. Cut the 3/4″ plywood pieces at 18 1/2″x37″ long and then attach the 1×4 trims with glue and 1 1/4″ nails. Align the edges flush for a professional result.
Drill pocket holes through the back of the 4 panels (set the jig for 2 1/2″ screws and drill the pocket holes through the plywood and slats). Fit the panels between the 2×2 posts and then male sure the corners are right-angled. Add glue to the joints and make sure you leave no gaps between the components.
Fit the 1×2 cleats to the interior of the planter box. Align the cleats with attention and then secure them to the sides with 1 5/8″ screws. Drill pilot holes before inserting the screws, to prevent the wood from splitting.
Fit the 1×4 slats to the bottom of the planter box. Place a piece of 3/4″ plywood between the slats to create even gaps and then secure them to the cleats with 1 5/8″ screws. Drill pilot holes before inserting the screws to prevent the wood from splitting.
Fit the 1×2 trims to the top of the rectangular garden planter box. Align the edges with attention and then insert 2″ nails to lock them into place tightly.
This rectangular garden planter box has a modern look and it is very easy to build.
Fill the holes with wood putty and then smooth the surface with 120-220 grit sandpaper. Apply a few coats of strain or paint to enhance the look of the planter box and to protect the components from the elements. Staple landscape fabric to the interior of the planter box. Make sure you check all my planter plans HERE. If you like my project, don’t forget to SHARE it on Facebook and Pinterest.
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