Container gardening provides flexibility and portability, allowing home owners to place their planters or pots practically anywhere to grow plants, vegetables or flowers of their choice. It is wiser to use planter boxes if the quality of soil in your area is poor, or you lack a garden altogether. A homemade redwood planter box is inexpensive compared to purchasing it from a store, and allows you to customize the dimensions according to your requirements. Although redwood is costly, it is attractive and withstands damage caused by natural elements.
Cut the 16-foot-long 2-by-6 redwood boards to size to construct four frames for the planter using a miter saw.
Lay the lumber for the four sides on your worktable. Join a board to a corresponding board with corrugated metal fasteners. Use four metal fasteners between boards that are 15 inches long to hold them securely in place. Hammer them in place.
Measure the width of each side. Use a miter saw to cut four lengths of 2-by-2 lumber so each is three inches shorter than the width. Two-by-6 redwood boards are actually 1 ½ inches thick and 5 ½ inches wide, so determine the length of each 2-by-2 by multiplying the quantity of boards per side by 5 ½, and then subtracting 3 inches from the resultant figure. For instance, using three boards per short side gives you 13.5 (after multiplying and subtracting with the required figures), and using seven boards gives you 35.5. So cut two lengths of 2-by-2 redwood lumber at 13 ½ inches and another two lengths of 2-by-2 redwood lumber at 35 ½ inches.
Secure the 2-by-2 redwood boards to a side with a drilling machine and drywall screws. Check to make sure the corners of the boards are 1 ½ inches inwards from the ends of every side.
Measure and cut plywood sheet for the base of your redwood planter so it is 35 1/2 by 13 1/2 inches. Place the sheet over the cavity at the base of the redwood planter and secure it with drywall screws. Also drill three to four ¾-inch wide drainage holes in the sheet.
Cut aluminum or fiberglass window screen with scissors so it is 3 inches square to cover each drainage hole with. Staple each screen piece over a hole, so it drains excess water out but not soil.