Growing your own tomatoes can be exciting as you watch your plants grow. Also, vine-ripened tomatoes can be eaten within seconds of being picked. While tomatoes are most often grown in a garden bed, the tomato plant thrives just as well when placed in a planter. Making a homemade tomato plant holder of your own can add to the enjoyment of gardening, while saving you money on supplies.
Arrange your four 18-inch boards into a square shape with the boards resting on their 2-inch sides. Screw three galvanized screws spaced evenly apart at each corner to secure the boards together.
Place your piece of plywood over the square and center it to be flush on all four sides. Screw four screws evenly spaced along each side of the plywood board. Turn the planter box over to set the plywood base on the ground.
Lay your two 5-foot long stakes on the ground vertically 1 foot apart. Lay one short stake horizontally over one end of the long stakes. Screw a single screw into both ends of the short stake to attach it to the long stakes.
Place a second stake 1 foot down from the first followed by the third and fourth stakes, each also 1 foot apart. Screw into each intersection of the stakes to secure them, leaving the bottom 2 feet of the 5-foot stakes open.
Stand the trellis portion up with the horizontal stakes running along the top. Put the trellis inside your planter box along one wall. Screw three evenly spaced screws into each leg of the trellis to secure it to the inside of the planter.
Open a black garbage bag and put it inside the planter to cover the bottom and move up all four sides of the planter. Staple the bag to the upper rim of the planter to hold it in place. Trim away any excess edges of the bag that go beyond the top of the planter.