Hanging planters and baskets allow you to grow vegetables even if you have no room for a traditional garden bed or container garden. There are several varieties of tomatoes available that are well-suited to hanging planters, including Florida Basket and Micro-Tom tomatoes. These dwarf varieties produce small fruits, similar to cherry tomatoes in size, and grow on compact plants that fit in planters as small as 4 to 10 inches in diameter. Growing hanging tomatoes does require specific care for them to thrive.
Fill a hanging planter with a soil-less potting mixture, leaving a 1- to 2-inch space between the rim of the planter and the soil. A soil-less mixture provides optimum drainage and doesn't become hard and compact during frequent watering.
Plant the tomato seedling 2 inches deeper into the planter than the seedling was at in its nursery pot. Remove the bottom leaves from the plant if they will be under soil level.
Hang the tomatoes in an area that receives at least eight hours of sunlight a day. If hanging the planter inside near a window, rotate the planter every two to three days so all sides of the tomato plant receive equal light.
Mix a soluble general-purpose fertilizer with water according to the fertilizer label instructions. Water the soil with the fertilizer solution until the excess water drains from the bottom drainage holes on the planter.
Check the soil once a day by sticking your finger into the top 1 inch. If the soil feels dry, water with the fertilizer solution. Water up to twice a day during hot, dry weather if the soil in the planter is drying out more quickly.
Harvest tomatoes as soon as they ripen. Ripe tomatoes are full-color, usually red, and firm to the touch. Frequent harvesting leads to further fruiting on most plants.