DIY Waterproof Wood Planter

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I don’t normally post a lot of DIY articles and videos on this site, but when I do, I try to make sure they’re really good ones that are fairly easy to do and legitimately useful. I’m not very good at building things, so easy is a requirement for me.

Recently, I came across a project that I love: A DIY Waterproof Wood Planter by Lumnah Acres. This is perfect for growing herbs, and it makes a great gift as well.

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Here’s what you need:

3 1/2″ wide by 32″ long board
3 1/2″ wide by 10″ long board
3 1/2″ wide by 14 1/2″ long board
Glue, nails or screws 1″ long to 1 1/4″ long
Matte finish paint a clear coat
220 Sandpaper
Black sharpies
Indoor/outdoor caulking
A can of flex seal for waterproofing
Paint

Here’s how to build it:

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Use a miter saw to cut 45-degree angles on the ends of the 32″ board.
Cut the board in half so you have two 16″ boards.
Repeat the last two steps except with the 10″ board so you end up with two 5″ boards that have 45-degree angles on each end.
Assemble the four pieces and measure the dimensions of the inside. It should be about 14.5″ by 3.5″. Cut a board down to length (this is how you end up with the third item in the materials list above).
Assember the five pieces. Make any necessary adjustments to ensure they fit together perfectly.
Put glue between the pieces and use a brad nailer to nail them together. Make sure the nail holes are on the ends.
Once the frame is assembled, but glue all around the edges of the bottom board and nail it into place.
Let it dry, then sand down the tops and corners with some sandpaper.
Put glue on the inside around the bottom edge.
Cover the top edges with masking tape, and the outside of the planter with newspaper.
Now spray the inside of the planter with Flex Seal.
Now paint the outside of the planter.
Once it’s dry, sand it down completely.

Watch the video below to see it done and to learn how to add a monogram to the side.