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WasteCap DIY: Window Garden Box

Hang this planter made from a reclaimed window and wood on your fence or house to liven up your outdoor space!  It’s easy to make and you can use it for flowers, herbs or salad greens.

You'll need the following materials and tools to complete the project:


  • 1-24in Window Sash
  • 8ft of 1x6 board (4 times the length of the
    window width)
  • 2ft of 2x4 Board (as long as the window is wide)
  • 3” Screws (4)
  • 2” Screws (24)
  • 2 Eye Hooks (¼“ or bigger)
  • Twine/chain 
  • Soil
  • Seeds/plants


  • Saw
  • Drill
  • ⅛“ Drill Bit
  • ¼“ Drill Bit (or appropriate size for eye hooks)
  • Safety Goggles
  • Ear Protection
  • Carpenter’s Square
  • Pencil


  1. Cut three boards for the front, back
    and bottom
    . First measure the width
    of your window.  Cut three boards to that
    length from the 1x6.  
  2. Now cut the two sides.  Measure and
    cut two pieces 8½“ long out of the
    remaining 1x6.
  3. Assemble the planter box.  Using 4 screws
    each, pre-drill ⅛“ holes and screw the front
    and back to the bottom so that the bottom
    edge is covered.  Next, align one of the sides
    to be flush with the front and extending past
    the back.  Attach the side using 2 screws into
    the bottom and one into the front and back.
    Repeat for the other side.
  4. Then attach the 2x4 to the bottom of
    the window. 
     Pre-drill down through the
    bottom of the window into the edge of the 2x4
    and attach with the 4 long screws. 
  5. Attach the box to the window.  The extended
    sides of the box should fit right over the ends
    of the 2x4.  Use 4 screws through the back of
    the planter and two from each end into the 2x4.
  6. Hang your planter box.  Using the larger bit,
    drill a pilot hole on both edges of the window
    about 3”  from the top.  Screw the eye hooks
    into these holes.  Tie the twine to the eye
    hooks to hang the planter as you would a
    frame.  Another option is to attach it directly
    to your fence/building (as seen in the photo)
  7. Finally, fill it with soil, and plant away!

* Some older windows may have lead based paint on them.  Be sure to seal that in with a new coat of paint to prevent any contamination of your edible plants.

Rachael will be joining us throughout the summer for more DIY projects, so be sure to follow us on FacebookInstagramTwitter and Pinterest to stay up-to-date with our latest projects.  


Click here for printable directions so you can begin your kneeling garden bench today.


Wednesday - Friday 10 a.m. - 5 p.m.
Saturday 10 a.m. - 4 p.m. 

2123 W. Michigan Street, Suite 100
Milwaukee, WI. 53233

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