Cherry tomatoes grow well in pots if you use a container at least 5 gallons, fill it with potting soil (not garden soil), and place it where it gets 6 to 8 hours of direct sun each day

A 5-gallon bucket, a standard terracotta pot, or a fabric grow bag all work. The size matters because cherry tomato roots need room to spread, and smaller containers dry out too fast in warm weather. Drainage holes are essential—water that pools at the bottom kills roots. If your pot has no holes, drill three or four in the bottom before you fill it.

Fill the pot with potting soil, not soil from your garden. Garden soil compacts in a pot and traps water. Potting soil is loose and drains faster. You can buy bags at any garden center or hardware store. Fill the pot to about an inch below the rim so water doesn't run straight off the top.

Key Takeaways

  • Use a pot at least 5 gallons with drainage holes, filled with potting soil, and place it in a spot that gets 6 to 8 hours of direct sun daily.
  • Water when the top inch of soil feels dry to your touch, usually every 1 to 3 days depending on heat and pot size.
  • Cherry tomatoes need support as they grow—use a cage, stake, or string tied to a frame above the pot.
  • Feed the plant every 2 to 3 weeks with a balanced fertilizer once flowers appear, because potting soil has fewer nutrients than garden beds.
  • Harvest ripe tomatoes regularly to encourage the plant to keep producing throughout the season.

Planting and positioning your pot

Start with a seedling from a nursery or garden center, or grow from seed indoors 6 to 8 weeks before your last frost date. Plant the seedling deep—bury it up to the first true leaves. Tomato roots form all along the buried stem, which makes the plant stronger. Gently firm the soil around the base and water until it drips from the drainage holes.

Place the pot where it will get at least 6 hours of direct sun. More is better—8 hours or more produces more fruit. A south-facing patio or balcony works well in most climates. If you live somewhere very hot, afternoon shade can prevent the fruit from getting sunburned, but morning sun is important. Avoid spots where the pot sits in wind all day, because wind dries soil faster and can snap branches as the plant grows taller.

Watering and soil moisture

Check the soil every morning or evening by pushing your finger an inch into the top. If it feels dry, water until it drips from the bottom. If it still feels moist, wait another day. In hot weather, this might mean watering every day. In cool or cloudy weather, every 2 to 3 days is normal. The goal is to keep the soil consistently moist but not waterlogged.

Pots dry out faster than garden beds, especially in summer heat and wind. A 5-gallon pot in full sun on a hot day can need water twice. Larger pots (7 to 10 gallons) stay moist longer and are easier to manage. If you travel or forget to water, a soaker hose on a timer or a straightforward drip line can keep the plant alive while you are away.

Inconsistent watering causes problems. Letting the soil dry completely, then soaking it, can crack the fruit or cause the bottom to rot (a condition called blossom end rot). Aim for steady moisture, not feast or famine.

Supporting the plant as it grows

Cherry tomato plants grow 2 to 3 feet tall and produce dozens of fruit-heavy branches. Without support, the plant flops over and fruit touches the soil, where it rots or gets eaten by slugs. Install support when you plant or within a week—waiting until the plant is large makes it harder to do without breaking branches.

A tomato cage (the wire kind sold at garden centers) works if you choose one at least 4 feet tall. Push it firmly into the soil so it does not tip when the plant is heavy with fruit. A wooden stake or bamboo pole tied to the main stem with soft string or cloth strips also works. As the plant grows, tie it loosely every 8 to 12 inches so it stays upright but can still move slightly in the wind.

Feeding your cherry tomato plant

Potting soil has some nutrients mixed in, but they run out as the plant grows and you water. Once the plant flowers, feed it every 2 to 3 weeks with a balanced fertilizer—look for a label with three numbers like 10-10-10 or 5-5-5. Follow the label instructions for how much to use. Too much fertilizer burns roots and produces lots of leaves but few tomatoes.

You can use liquid fertilizer (mix it with water and pour it on), granules (sprinkle them on the soil and water), or slow-release pellets (mix them into the soil at planting time). All work. Liquid is fastest if you forget to feed early in the season. Slow-release is easiest if you want to set it and forget it.

Harvesting and extending the season

Cherry tomatoes start producing fruit 60 to 80 days after planting. Pick them when they are fully colored and slightly soft to the touch. Ripe tomatoes come off the vine with a gentle twist. Picking regularly tells the plant to keep flowering and making more fruit instead of putting energy into seeds.

In mild climates, a potted cherry tomato can produce until the first frost. In cold climates, bring the pot indoors before the temperature drops below 50°F at night. Place it in a sunny window. The plant will slow down but may keep producing for a few more weeks. Once it stops, you can compost it or let it rest in a cool garage and try again next spring.

Common problems and how to prevent them

Blossom end rot appears as a dark, sunken spot on the bottom of the fruit. It is caused by inconsistent watering and low calcium. Water steadily and add a handful of crushed eggshells or a calcium supplement to the pot at planting time. Powdery mildew (white coating on leaves) happens in humid air with poor airflow. Space pots apart, water at the base (not the leaves), and remove affected leaves. Pests like spider mites and whiteflies can appear indoors or outdoors. Spray the plant with a strong stream of water to knock them off, or use insecticidal soap if the problem is severe.

If the plant stops flowering or produces very few tomatoes, it is usually getting too little sun or too much nitrogen fertilizer. Move it to a brighter spot or switch to a fertilizer higher in phosphorus (the middle number on the label).

Frequently Asked Questions

Can I grow cherry tomatoes indoors under a grow light?

Yes, if the light is strong enough. A standard shop light with two fluorescent bulbs or an LED grow light placed 6 to 12 inches above the plant can work, but it needs to run 14 to 16 hours a day. The plant will grow and flower, but indoor production is usually lower than outdoors because natural sunlight is much brighter. A sunny south-facing window is easier and cheaper.

How many cherry tomato plants can I fit in one large pot?

One plant per 5-gallon pot is the standard. You can squeeze two into a 10-gallon pot or large fabric bag, but they will compete for water and nutrients, and you will get fewer tomatoes per plant. One plant in its own pot is easier to manage and produces more fruit.

What do I do if my plant gets too tall and leggy?

Leggy growth (tall, thin stems with few leaves) means the plant is not getting enough light. Move the pot to a brighter location or closer to a window. If it is already in the brightest spot available, you can prune off the top 6 inches to encourage bushier growth lower down, though you will lose some height and delay flowering slightly.

Can I reuse the potting soil next year?

You can, but refresh it first. Remove the old plant and roots, mix in fresh potting soil (about half and half), and add a handful of compost. Old soil compacts over time and loses nutrients. Mixing in fresh soil and compost restores drainage and adds food for the new plant.

When should I plant cherry tomatoes in a pot?

Plant after your last spring frost date, when soil and air temperatures are consistently above 50°F. Tomatoes planted too early in cold soil will sit and rot. If you start from seed indoors, sow 6 to 8 weeks before that date so the seedling is ready to go outside when the weather warms.