How to mount a window box planter

Updated November 21, 2016

Wall-mounted flower boxes bring beauty and nature right to your window. Hanging your window box planter is not a difficult job at all. It is just a matter of using the appropriate wall anchors to keep your planter from falling off the side of your house. A window planter can become quite heavy when it is filled with soil and flowers. You will not have to search far to find everything you need to complete this project. All materials are available at your local home remodelling centre.

Measure the distance from the centre of each hanger on the back of your window box planter. Mark the exact same measurements on the side of your house with a pencil, directly under your window. Place a level under your pencil marks and adjust your marks as needed.

Insert the appropriate size and type of drill bit into your variable speed drill, or your hammer drill. The type of drill that you will use is based on your siding. Use your variable speed drill and wood drill bit for vinyl and wood siding; use your hammer drill and masonry drill bit for brick siding. You must anchor your window planter box to wall studs for wood and vinyl siding. Your studs are located at each side of your window (you can use a stud finder to locate them).

Drill a hole into your siding where you made your pencil marks. Insert an anchor into each hole by hand until the head of the anchor is flush with the surface of your siding.

Lift your window box planter and ask a helper to insert a screw through the hanger loops or bracket holes. Tighten each screw with your variable speed drill and Philips-head drill bit. Complete this step before you fill your planter with flowers. It is much easier to mount your flower box when it is empty.


There are different types of window planter boxes. Window planters can be purchased with brackets already installed; some will have loops on the back for inserting screws; and some require that you install separate brackets. Follow the instructions on your package of anchors. Every size of anchor requires the use of a specific size of drill bit.


Use L brackets to support the base of your window planter box if it will be located above the first floor of your home, or if it is extremely heavy. This will prevent your planter from pulling away from your house and causing damage, or falling and injuring you or someone else.

Things You'll Need

  • Tape measure
  • Pencil
  • Level
  • Variable speed drill
  • Drill bits
  • Hammer drill
  • Masonry drill bit
  • Stud finder (optional)
  • 3-inch plastic anchors
  • 3-inch galvanised screws
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About the Author

Based in Oklahoma City, Debbie Tolle has been working in the home-improvement industry since 2001 and writing since 1998. Tolle holds a Master of Science in psychology from Eastern Illinois University and is also a Cisco-certified network associate (CCNA) and a Microsoft-certified systems engineer (MCSE).