Bunnings Workshop member Oldfart shared this impressive herb planter and resident Bunnings D.I.Y. expert Mitchell shared the following step-by-step instructions about how to build this popular project.
To build the larger base, cut eight pieces of decking to 1m to create the sides. Start by pre-drilling and screwing four of the boards into the hardwood legs. You can cut off the points of the spikes or leave them to fix the unit into the ground with.
Screw the remaining four boards to join the sections.
Once you have the frame and sides screwed together, flip it upside down so you can screw the baseboards on. Cut nine boards to 1m in length. Pre-drill and screw them across the base, allowing a small gap in-between for drainage. You will either need to remove the corners of the first and last board to fit around the legs or leave a gap when laying them.
To ensure the boards don't sag, cut two brace boards to fit and screw them on top.
Creating the inner box is done in the same fashion as the external one, but just with smaller dimensions. Remember when you lay the plastic to put an adequate amount of drainage holes in it so the plants don't get wet feet.
More inspiration for your garden
Oldfart also shared this three-tier planter box made from fence palings that took two hours to create and cost less than $20.