You can have nice-looking embellishments to any outdoor living area with large rectangular planters. Best materials for planters include cedar, redwood, or teak as they are strong when exposed to the elements. Altering the length or the height of the planter box allow you to fit to your available space. A rectangular planter that’s built long enough can be used to border a deck or patio. You can line pathways, define and split outdoor spaces or offer container planter spaces lengthways a fence line with these naturally attractive rectangular planters.
Start the project by deciding the size of the large rectangular planter you want. Measure the available space and the length of the planter box so they can fit. Depending on the plants you plan to plant, large rectangular planters should be 8 to 12 inches depth. Take measurement and marking of the redwood for the length and width of the rims and the lowermost of the planter. A large rectangular planter measures 12 inches x 6 feet x 12 inches. Cut boards into two 12 inches x 6 feet for the front and back panels of the planter and two 13 x 13 boards for the two ends. The end boards measures 1 x 1/2 inch larger on the width to cover for the thickness of the boards. The lowermost board should measures 47 x 11 inches wide to fit the inner of the four sides of the box.
Make sure you work on a flat surface when building the large rectangular planters. Place the bottom board on the ground. Put the two end boards level against the edge of the lowermost panel. It should be upright between the end boards and the lowermost boards. Use 1 inch decking screws to secure the end panels to the lowermost board. Position the screws with 2 inch distance from the bottom edge. Fasten the front panel upright to the lowermost board and the end boards. Sink wood screws lengthways the edge every 2 inches. Fasten the rear board upright to the other side of the end and lowermost panels with the same technique.
Flip so that the bottom of large rectangular planters is facing up. Prepare four 2 x 2 x 2 inch wood piece as leg for the planter box to lift it off the earth. Attach legs along the length of the front and rear edges in each corner of the planter box. Sink 2 1/4-inch decking screws through each leg to secure. Drill holes through the lowermost panel for drainage. Install inside the planter a section of plastic liner piece. Use a staple gun to secure. Pinhole the plastic over the drainage holes.