Making Window Boxes


Window boxes can be used on any style of house to enhance its beauty. Plain house exteriors that need a bit of decor benefit from the fresh appearance of spring and summer flowers. Window boxes can be filled with pine cones or pine boughs during the winter months. You only need basic carpentry skills and a few tools and supplies to make window boxes for your home.

Step 1

Measure the width of your window. This is the length of your flower box. If you have a particularly wide window, build two window boxes and place them side by side.

Step 2

Mark the window width measurement on two boards with a pencil.

Step 3

Cut the two boards at this measurement, using a circular saw.

Step 4

Mark and saw two 10-inch-long boards.

Step 5

Create a frame-shape with the four cut boards. The two longer boards are up the front and back, while the 10-inch boards fit inside the two long boards at each end.

Step 6

Drill four to five screws through each of the four ends of the longer side boards and into the sides of the shorter end boards.

Step 7

Place the wood frame onto a piece of plywood (½ or ¾ inch thick). Mark all the way around edge of the wood frame onto the plywood with pencil.

Step 8

Cut the marked plywood with a circular saw.

Step 9

Put the cut plywood on top of the wood frame (top and bottom are the same, and drill a screw about every 4 or 5 inches through the plywood into the frame.

Step 10

Drill holes across the plywood at random distances. This will allow the water from the soil in your window box to drain out easily.

Step 11

Turn your window box right-side up, and paint, stain or use a clear polyurethane to seal it. Let dry thoroughly.

Step 12

Screw eye hooks along the top of the back board of your window box, about every 6 inches.

Step 13

Screw open hooks onto your house, under the window, at the same intervals as the eye hooks on your window box.

Step 14

Hook your window box eye hooks onto the open hooks of your house.

Things You'll Need

  • Measuring tape
  • 1-inch pine boards; 10, 12, or 14 inches wide
  • Circular saw
  • 1 1/2-inch wood screws
  • Drill and screwdriver attachment
  • Plywood
  • 1 1/2-inch eye hooks
  • 1 1/2-inch open hooks
  • Paint or other sealer (optional)


  • Lees Wood Projects: How to Build a Planter box
  • Ask the Builder: Window Box
Keywords: window boxes, flower boxes, wood planters

About this Author

Karen Ellis has been a full-time writer since 2006. She is an expert crafter, with more than 30 years of experience in knitting, chrocheting, quilting, sewing, scrapbooking and other arts. She is an expert gardener, with lifelong experience. Ellis has taken many classes in these subjects and taught classes, as well.