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How to Make a Window Box That is Rot-Resistant

Updated: Oct. 20, 2022

Check out this yard and garden handy hint for making rot-proof window boxes.

rot-proof window box flowersFamily Handyman
Window boxes will bring a splash of color to the front of your home. Plant perky pansies or cascading flowers such as petunias. You can even use the boxes to grow herbs.

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Make This Window Box

You can’t beat the look of a real wood window box on a home. Wood takes paint well, so you can tailor the box’s color scheme to complement your house. But ordinary wooden boxes rot out in just a few years, and plastic window boxes won’t rot but don’t look as nice as the traditional wood box. Here we’ll show you how to make a window box that is wood and rot-resistant.

construct rot-proof window box flowers

This window box design incorporates the best of both materials. Follow the steps below for how to make a window box yourself.

  1. Buy a plastic window box at a home or garden center.
  2. Construct a cedar frame around it. Size the frame so the lip of the plastic window box rests on the wood. There’s no need for a bottom.
  3. Cut the front side of each end piece at a 5-degree angle, then screw together the frame with 2-in. deck screws.
  4. Attach the box to the house with a pair of L-brackets, and you’re ready to get growing.

root-proof window box flowersFamily Handyman

First impressions are important, so you want to make the exterior of your home as attractive as possible. It doesn’t matter if you’re looking to sell or just want to give your home’s exterior a fresh look, so check out these 16 ways to add curb appeal to your home for less than $50!  And learn how to build these planter window boxes with these tips.