How to Build (nice) Planter Boxes Economically
You will need:
(8) – 70″ planks for the front and back (long sides)
(8) – 23″ planks for the ends (short sides)
(6) – 22″ 2 x 4s
(2) – 69 1/2″ 2 x 4s (floor supports)
Lay one plank on a 2 x 4 aligning the top edges. The plank should overlap the 2 x 4 by the depth of an end plank. In this way the corners of the basic box will be level and smooth. Attach a 2 x 4 on the other end of the plank. Continue fastening four planks to the 2 x 4s to create one long side. Assemble two long sides.
Decide how deep you want the soil to be in your planter box. Then measuring down from the top, attach a floor support to each side. Use 2 1/4″ or 2 1/2″ deck screws. You may need to drill your holes first.
Line up the long sides. Starting at the bottom, attach a plank on each end. Build up the ends one plank at a time.
Your planter box should now look like this (except for the center brace):
Measure and cut eight trim boards for the corners. Attach the trim boards with finishing nails.
With the remaining planks, cut floor boards measuring 22 1/2″ long. You will need 13 floor boards, however, the last board will need to be cut in width to fit your box. Using a hand saw or jigsaw, cut the floor boards to fit around the 2 x 4 pieces.
You have just completed a very attractive planter box at a fraction of the cost had you purchased it as a kit or fully assembled! You are a financial carpentry genius!
The finished planter:
What’s next? I will be staining my box with a transparent outdoor stain…probably Thompson’s WaterSeal. This isn’t necessary, however, cedar does turn gray as it weathers and ages. I will be lining my box with a commercial grade landscaping cloth and filling it with good soil in preparation for planting those seedlings I hatched recently (see that post here) and planting more seeds.
Oh, don’t you just love spring!
RUSS on May 03, 2019
I like this planter and your directions. I did add drain holes. Most plants do not need deep soil to thrive. One foot is more than enough. I lined mine with heavy gauge plastic (6mils). This protects the wood even though you are using cedar. I also added hidden wheels so the planter can be moved easily.