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A three-tiered timber planter with pot plants against a garden wall

Overview

Add some colour and interest to any size backyard with a tiered timber planter. It’s easy to build and you can use it to grow your favourite flowers or herbs.

Steps

1Cut the timber

To make this project easier, you can have most of the timber cut at your local Bunnings Warehouse. The cutting list is:

150mm x 25mm Treated pine (for the boxes):

  • 1000mm x 6
  • 900mm x 3

70 x 35mm Treated pine (for the legs):

  • 1350mm x 2
  • 1200mm x 2
  • 415mm x 2 (middle supports)
  • 630mm x 2 (bottom supports)
  • 1000mm x 1 (bottom brace)
An assortment of tools and materials required to complete this project

2Measure and mark the short ends

While most of the timber has been pre-cut we still need to cut the short ends for the sides of the planter boxes. To do this, measure and mark the timber to 150mm. 

Person marking a length of timber using a combination square and pencil

3Cut the short ends

Use the drop saw to cut six of these 150mm ends for the planter boxes.

A length of timber being cut with a drop saw

4Lay out the A-frame

Take a length of the 1200mm timber and lay it vertically. Take a 1350mm piece of timber and align it with the top of the 1200mm and to the right, at roughly a 30-degree angle. Measure and mark 510mm and 935mm from the top of the 120mm piece of timber. Lay the middle support at the 510mm mark and the bottom support at the 935mm mark. Make sure the supports are square. Mark where you can drill to join the supports to the frame. Always wear gloves when working with treated pine. 

Bunnings team member Jess assembling a timber A frame

5Pre-drill the holes in the support

Once you have the supports square,  mark out the holes. Next, put on your dust mask and pre-drill two holes at both ends of the support using the 3mm drill bit

6Secure the middle support

Put the middle support on the 1200mm timber at the 510mm mark. Use the drill and a 50mm pine screw to secure the support. Check that the supports are square. Once they are square, attach the supports with the drill and pine screws to the 1200mm piece of timber.

Bunnings team member Jess joining lengths of timber with a cordless drill

7Secure the supports to the second leg

Use the square to make sure that the 1200mm timber and 1350mm timber are still square. Once they are, secure the supports to the 1350mm with the pine screws. Repeat the above steps to build the second A-frame, making sure it is a mirror image of the first one.

Bunnings team member Jess assembling a timber A frame

8Assemble the planter box

Take a 1m piece of the 150mm x 25mm and stand it on the bench on its narrow edge. Take a 150mm end, place it behind, and flush with the 1m piece of timber. Secure the 150mm end to the 1m piece of timber with a nail gun. Repeat this at the other end. Place the second 1m piece of timber next to 150mm ends. Make sure it's flush and secure it with the nail gun. Repeat this to make the two other planter boxes

Bunnings team member Jess joining lengths of timber with a nail gun

9Attach the base

With the planter box on the bench, take a 900mm piece of timber and place it inside the planter box. The base is shorter than the length of the box so that water drains away at either end. Tap the base so that it's flush with the bottom of the planter. Turn the planter on its side. Use the nail gun to secure the base to the sides of the planter box. Repeat this to attach the two other bases to the planter boxes.

Bunnings team member Jess joining lengths of timber with a nail gun

10Pre-drill and attach the back brace

Use the 3mm drill bit to pre-drill two holes at both ends of the 1000mm timber, which is the back brace. Attach the back brace to the A-frames using the 50mm pine screws

A person drilling a hole in a length of timber

11Attach the planter boxes

Place a planter box on the bottom supports on the A-frames, making sure it's square. Pre-drill two holes in either side of the planter box with the 3mm drill bit. Then use the 50mm pine screws to secure the planter box to the A-frames. Repeat this process to attach the two other planter boxes.

A three-tiered timber planter with pot plants against a garden wall

12Finish off the tiered timber planter

Depending on the look you want you can paint or stain your timber planter. Once it's dry, you can move it into place and fill it with your favourite flowers and herbs. 
A three-tiered timber planter with pot plants against a garden wall

Suggested products

Health & Safety

Please make sure you use all equipment appropriately and safely when following the advice in these D.I.Y. videos. You need to be familiar with how to use equipment safely and follow the instructions that came with the equipment. If you are unsure, you may feel it is safest to consult an expert, such as the manufacturer or an expert Bunnings Team Member.

Grave health hazards are linked to asbestos, which may be in homes built up to 1990. Health hazards may result from exposure to lead-based paints in older materials and copper chromium arsenic (CCA) treated timber. For information on the dangers of asbestos, lead-based paint and CCA treated timber and tips for dealing with these materials contact your local council's Environmental Health Officer. You can also use a simple test kit from Bunnings to indicate the presence of lead-based paint.