Window Box Planters


After we finished building our backyard workshop, the exterior felt like it was lacking charm. We built some simple flower boxes for only $15 each!
Our workshop sits in our backyard, so we wanted it to be as visually appealing as possible. Building and installing flower boxes under the windows added just the right amount of color and contrast.
We cut 1x4's to length for the front and sides. Be sure to sand the square edges off of the 1x4's to break the edge and highlight the horizontal planks.
We screwed the horizontal planks to 2x4 support blocks.
Another piece of wood was added to the bottom and then to the back of the flower box. Drill a few holes in the bottom of each box for drainage.
We added some extra pieces of trim around the tops and bottoms to add additional interest to the boxes.
On the front of our house, we have white painted flower boxes, which I love, but usually have to touch up the paint each spring. So to change things up and try something new, I stained the boxes with an American Walnut stain and then brushed 3 coats of spar varnish over each box to protect them from the elements, including the insides.
We used these L brackets to attach the boxes to the workshop. In this photo, we started with two brackets but later added a third for additional support.
We mounted the boxes a little lower than the window sill so the windows can still be opened up for fresh air.
We built these flower boxes almost a year ago and they still look just as good as the day we built them.
Before adding potting soil and plants, I lined each box with a piece of landscape fabric to help protect the inside of the flower box from moisture.
For more projects like this, follow us on our Facebook page at https://www.facebook.com/pages/Kruses-Workshop/544083725671242
Heidi

Want more details about this and other DIY projects? Check out my blog post!

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Have a question about this project?

3 of 7 questions
  • Ang32859170
    on Jun 20, 2018

    My husband and I are arguing about the material size. The pictures look like 2x4’s and 4x4’s that you screwed to instead of 1x4’s and 2x4’s as it says in the description. Can you clarify?

    • Patty
      on Apr 1, 2019

      I see 1x4’s for the length and sides but 2x 2’ s for support blocks.

  • Ft.29298732
    on Jul 2, 2018

    Did you make the shutters too? It’s gorgeous and I am aiming for the same look for my new shed. I want it unique but pretty and it will be my play shop on wonderful Fall days or evenings if I want to build a bird house or work on something. Thanks! Great job is an understatement. I used to have that kind of energy many moons ago!;)

  • Ft.29298732
    on Jul 2, 2018

    Did you make the shutters too? It’s gorgeous and I am aiming for the same look for my new shed. I want it unique but pretty and it will be my play shop on wonderful Fall days or evenings if I want to build a bird house or work on something. Thanks! Great job is an understatement. I used to have that kind of energy many moons ago!;)

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