Grow cherry tomatoes indoors this winter for a tasty, year-round treat. Small-fruited tomatoes, like cherry tomatoes, are best suited for an indoor container garden, according to Texas A&M University Extension Service. They recommend growing one of these varieties: Tiny Tim, Tumbling Tom or Small Fry. Purchase mature plants from a reputable nursery or garden center.
Fill the bottom 1 inch of a 5-gallon pot with gravel. Fill the rest of the pot with potting soil.
Using your hand, scoop out a hole deep enough to hold the roots of the cherry tomato plant. Set the plant in the hole, spread out the roots and pack soil firmly on top of them and around the base.
Set the tomato cage around the perimeter of the pot. Push the cage into the soil until it cannot go any deeper.
Water the plant daily with fertilizer until moist. Use a fertilizer formulated for tomatoes, available from nurseries and garden centers. Mix the fertilizer as directed. Store the fertilizer solution in a watering can for easy watering.
Set the pot in a sunny window, preferably a south-facing window. Rotate the plant every couple of days to allow the plant to receive full sunlight on all sides. Occasionally place the plant outdoors on warm days (over 70 degrees F) for an extra burst of sunlight and warmth. Plants make food from the sun, so any extra sun exposure is beneficial.
Pick the cherry tomatoes when they feel firm and have an all-over deep color.