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How to build a wooden vegetable garden planter box

Updated July 20, 2017

Even if you're short on space, you can grow your own vegetables by constructing a wooden vegetable garden planter box. Building a 4-foot-by-4-foot square planter box gives you a variety of planting options ensuring that your plants and vegetables will always be within arm's reach. Cedar and redwoods offer natural resistance to rot and insects. If you plan to use treated wood, select wood with eco-safe sealants that won't leach into the soil.

Arrange the four 1-inch-by-12-inch planks to form a 4-foot-by-4-foot square on a flat surface such as a paved driveway or a garage floor.

Place one of the 2-inch-by-2-inch corner posts where two boards meet.

Secure the planks to the corner post using evenly spaced wood screws.

Repeat Steps 1 through 3 to secure each plank to the corner posts with the remaining wood screws. Leave the planter with the corner posts facing skyward.

Trim the hardware cloth to fit around the corner posts, and secure it with staples.

Choose a location that gets plenty of sunlight throughout the course of the day.

Measure a 4-foot-by-4-foot area, and mark the corners with stakes.

Clear the area of debris.

Using the posthole digger, dig four 1-foot deep holes, one at each corner. Remove the stakes.

Turn the planter box over so that it stands on the corner posts.

Move the planter box to the location, and place the corner posts in the holes.

Fill the holes with dirt securing the planter box into place.

Tip

A 1-inch-by-12-inch plank actually measures 3/4 inch by 11 1/4 inches. To plant deep-root vegetables such as carrots and potatoes, build two boxes and place one on top of the other. Secure them in place with metal brackets. In this case, use 12-inch sections of 2-inch-by-2-inch corner posts in addition to the 2-foot section to make sure all edges are flush.

Warning

Wear safety goggles when working with wood and power tools. Wear gloves when working with the wire mesh. Predrill pilot holes to prevent splitting.

Things You'll Need

  • 4 planks, 1 inch by 12 inches by 4 feet
  • 4 corner posts, 2 inches by 2 inches by 2 feet
  • 12 number 8 wood screws, 1 1/2 inches long
  • Electric drill
  • Wire mesh, 4 feet by 4 feet
  • Stapler
  • 1/2-inch staples
  • 4 stakes
  • Post-hole digger
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About the Author

Jennifer Bakken began writing professionally in 2006. She has written and produced documentary films that have appeared on local PBS channels. Bakken has a Bachelor of Arts in speech communication and a Certificate in Publishing from Minnesota State University Moorhead, where she is completing her Master of Fine Arts thesis in creative writing.