Growing tomatoes upside down has become popular. Now, most garden stores carry specially made upside-down tomato planters. These special planters are often quite expensive, however. Considering how easy and cheap it is to make your own upside down planter, purchasing these pricey commercial planters isn't necessary. You can plant tomatoes upside down in a planter using basic materials.
Drill a hole into the bottom of the hanging planter using a 2-inch hole saw. Line the inside bottom of the planter with a piece of landscaping fabric. Cut a 2-inch slit in the center of the landscape fabric for the tomato plant to hang through.
Hang the planter. Place the tomato plant upside down, feeding the plant through the slit in the landscape fabric and through the hole you made in the bottom of the planter.
Fill the planter with commercial potting soil. Tamp down the soil around the tomato plant's root ball.
Plant herbs or flowers in the top of the planter if desired. Water well, making sure the soil is moist and the water is draining freely from the hole in the bottom of the planter.
Water the tomato plant every day or two. Feed the plant with fertilizer once every two weeks. You can use a store-bought fertilizer like Miracle Gro and follow the directions.