How to Keep a Tomato Plant Inside


Just because the growing season ends and you must put the garden to bed for the winter does not mean that you cannot continue to enjoy delicious homegrown vegetables. With a little preparation and effort, create an indoor garden and grow some of your favorite vegetables inside. Tomato plants will flourish indoors as long as you provide adequate light and moisture to help them grow.

Step 1

Select the tomato plants you wish to grow. Some gardeners opt to grow small dwarf tomato plants indoors because the small size of these tomato plants necessitates only a 1-gallon container. You can successfully grow a regular tomato plant indoors as long as you have a 3-gallon planting container for it.

Step 2

Fill the smaller planting container with potting soil and transfer the tomato plant from the temporary container to the planting container. Place the tomato plant into the container up to the first leaves on the stem and firm the soil carefully around the plant. Provide a thorough watering for the tomato plant.

Step 3

Place the tomato plant under the grow light and keep the grow light on for between 18 and 24 hours each day. Provide water for the tomato plant when the soil dries and water to moisten the soil again thoroughly.

Step 4

Fertilize the tomato plant every other time you water the plant, beginning approximately two weeks after you plant the tomato. Water the tomato plant first and then mix the fertilizer with water according to package recommendations. Carefully pour the fertilizer onto the soil around the tomato plant.

Step 5

Transplant the tomato plant to the larger container when it is approximately 6 inches high. Fill the larger container almost to the top with potting soil and carefully remove the tomato plant from the smaller container and set it in the larger container. Tamp the soil gently around the tomato plant to plant it at the same depth as it was growing in the smaller container. Stake the tomato plant or fit a tomato cage around the plant to support it.

Step 6

Watch the tomato plant for blossoms. When the tomato plant blossoms, help the plant pollinate because it is indoors. Gently shake or tap the stem and branches of the tomato plant to help transfer the pollen from the male anthers to the female carpels. This should occur easily with simple shaking and moving of the blossoms.

Step 7

Harvest tomatoes from the plant in the same way you would harvest tomatoes outdoors. Wait until the tomatoes are completely ripe on the vines and then gently pull them off.

Things You'll Need

  • Containers (small and large)
  • Potting soil
  • Grow light
  • Stake or tomato cage
  • All-purpose fertilizer (water-soluble)


  • Denver County Extension: Grow Tomatoes Indoors
Keywords: tomato plants, grow a regular tomato plant indoors, dwarf tomato plants

About this Author

Kathryn Hatter is a 42-year-old veteran homeschool educator and regular contributor to Natural News. She is an accomplished gardener, seamstress, quilter, painter, cook, decorator, digital graphics creator and she enjoys technical and computer gadgets. She began writing for Internet publications in 2007. She is interested in natural health and hopes to continue her formal education in the health field (nursing) when family commitments will allow.