How to Build a Window Box Planter


Window boxes allow you to grow flowers, herbs or vegetables in a small space. Add an accent of color to your house with a window box overflowing with flowers. Keep fresh herbs handy to your kitchen with a window box herb garden, or grow salad greens and cherry tomatoes. If you don't have a convenient window, use your window box on a deck or balcony.

Step 1

Cut the front and back sections of the planter from the 6-foot board. Each section should be 30 inches long. Cut a 30-inch section from the 4-foot board for the bottom of the planter. Cut two pieces, 5 7/8 inches by 6 3/8 inches, for the sides.

Step 2

At the bottom edge of each side piece, make a mark 5 inches from the back. Draw a line from this mark to the top front edge of the side piece. Cut along this mark. Your side pieces will now have a straight back and a tapered front.

Step 3

Glue all the pieces together. Clamp and allow to dry. Predrill holes in the front and back sections and use 1 ½ inch screws to secure these pieces to the sides.

Step 4

Drill holes in the bottom of the box for drainage. Use a 1/8 inch drill bit and drill holes three inches apart.

Step 5

Paint or stain your window box. Use a paint designed for outdoor use.

Step 6

Fill the box with a planting mixture and plant with your desired plants.

Things You'll Need

  • Circular Saw
  • Drill driver
  • Tape Measure
  • Clamps
  • Paintbrush
  • 6 feet 1-by-8 board
  • 4 feet 1-by-8 board
  • 1 ½ inch galvanized screws
  • Wood glue
  • Exterior stain or paint


  • How to Build a Window Box Planter
  • How to Make a Simple Window Box
  • How to Build a Window Box

Who Can Help

  • How to Build Window Boxes
Keywords: window box, herb garden, salad garden

About this Author

Cynthia Myers is the author of numerous novels and her nonfiction work has appeared in publications ranging from "Historic Traveler" to "Texas Highways" to "Medical Practice Management." She has a degree in economics from Sam Houston State University. Before turning to freelancing full-time, Myers worked as a newspaper reporter, travel agent and medical clinic manager.