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How to Build a Redwood Planter

For best results: Measure and trim each piece as you build. Pre-drill holes, especially at the ends of boards to prevent splitting. Use only top-quality, hot dipped galvanized nails to prevent stains.

1. Nail two 2X2’s to adjacent faces of each 4X4 corner post. Use 12d nails. Leave room for the 1X4 panels to fit flush with outer faces of the 4X4 posts.

2. Attach 1X4 boards to posts with two 6d nails at each board end. The 1X4 boards should be evenly spaced along the post and flush with the bottom and outer face. Use construction heart for interior walls.

3. Complete two walls, both inside and out, to form an "L" as shown in the illustration. Then construct the last two walls, completing the box. It may help to lay the project on its side when nailing the last walls.

4. For the base, turn the box upside down and place 2X4’s on opposite sides, 1-inch in from the edge. With two 12d nails in each board end, attach the 2X4’s to the 4X4 posts. Drill two 1-inch drainage holes in two of the 2X6’s to be used for the bottom. Turn the box upright and lay all four 2X6’s in place to form the bottom of the planter.

5. For the top trim, butt-join 1X4’s flush with the planter’s outer edge. Use two 6d nails at each board end. penetrating the 4X4 at one end and the 2X2 at the other. These nails can be countersunk and filled with non-oily wood filler.

6. Interior surfaces should be lined with a polyethylene liner. Make sure to provide proper drainage by cutting holes through the bottom of the planter and the liner.

Construction
Construction Heart/Deck Heart*
4×4 4 pieces 15"
1×4 16 pieces 22 1/2"
2×6 4 pieces 22 1/2"
2×4 2 pieces 24 1/2"

Construction Common/Deck Common*
4×4 4 pieces 15"
1×4 16 pieces 22 1/2"
2×6 4 pieces 22 1/2"
2×4 2 pieces 24 1/2"

Nails
60 12-penny
160 6-penny

*Deck Heart and Deck Common are available in 2×4 and 2×6 only.

Credit: California Redwood Association