Step 1: Cut the pieces
Using the project diagram and materials list as reference, cut pieces to desired lengths (additional materials noted for making the 24-inch-tall beds)
(To build the 24-inch-tall bed, cut a total of 16 (A) lengths and cut the (B) pieces to 22 inches.)
When completed, the outer edge of the base measures 48 inches square.
Step 2: Assemble raised bed base
Use the (A) lengths to form three squares. For each square, butt-joint corners to form a square measuring 45-inches on each side. Secure each corner with three screws. Repeat for the remaining squares.
Stack the three squares, being sure to alternate the butt joint corners.
Step 3: Secure the corners.
Position (B) pieces in each corner of the of stacked squares (two per corner) and attach using two screws (refer to project diagram for placement). For a cleaner look, drive screws from inside the bed.
Step 4: Add trim support.
Attach (C) pieces at the top and bottom of each side using five screws per piece. For a cleaner look, attach screws from inside the bed.
Step 5: Attach top edge.
Miter cut the ends of (D) boards to 45 degrees, keeping the longer side to 52-inches.
Position the mitered boards on top of the base to create an edge around the bed. The board should extend into the bed approximately 1/2 inch.
Use a screw at each corner to join the mitered ends together. Use additional screws, (4 per board) through the underside of trim supports (C) to secure the edge in place.
Good To Know
If using treated lumber, you can to line the inside of the four walls of the planter with plastic sheeting to protect soil and plants from chemicals. Cut and staple sheets of plastic in place, being sure to overlap them to maintain a water barrier. Do not line the bottom of the planter with plastic.