Cherry tomatoes grow well in containers and produce fruit faster than larger varieties

Cherry tomatoes are among the easiest tomatoes to grow in pots because they need less root space than beefsteak or paste varieties, and they mature in 60 to 85 days from transplant. A pot as small as 5 gallons will work, though 10 gallons gives better results and more consistent watering. The key is drainage, soil depth, and consistent water — cherry tomatoes in containers dry out faster than in-ground plants and need attention every day during hot weather.

You can start from seed indoors 6 to 8 weeks before your last frost date, or buy transplants from a nursery and pot them up when ready. Either way, the plant goes into the pot at the same depth it was growing before — bury the stem up to the first true leaves if it is leggy, and the buried stem will sprout roots along its length.

Key Takeaways

  • Use a pot at least 5 gallons in size with drainage holes, filled with potting soil mixed with compost, not garden soil.
  • Plant one cherry tomato per pot, burying the stem up to the first set of true leaves to encourage a stronger root system.
  • Water deeply every day or every other day depending on heat and pot size, checking soil moisture by touch rather than on a schedule.
  • Place the pot in a spot that gets at least 6 to 8 hours of direct sun, and stake or cage the plant as it grows.
  • Feed every two weeks with a balanced fertilizer once the plant flowers, because potted soil depletes nutrients faster than garden beds.

Choosing the right pot and drainage

The pot must have at least one drainage hole in the bottom — water sitting in the soil kills roots and causes disease. A 5-gallon food-grade bucket, a terracotta pot, or a plastic nursery pot all work, as long as drainage is open. Terracotta breathes and dries faster, which is useful in humid climates but means more frequent watering in heat. Plastic and fabric pots retain moisture longer and are lighter to move.

A 10-gallon pot is worth the extra space and soil cost because it holds moisture more evenly and gives roots room to spread, which means more stable growth and fewer watering crises. If you are growing multiple plants, space pots at least 2 feet apart so air circulates and disease does not spread from pot to pot.

Soil and starting the plant

Fill the pot with potting soil, not garden soil. Garden soil compacts in a container and blocks water and air. Potting soil is loose and drains well. Mix in compost at a ratio of about 3 parts potting soil to 1 part compost — this adds nutrients and helps the soil hold moisture without becoming waterlogged.

If you are planting a transplant from a nursery, dig a hole deep enough to bury the stem up to the first set of true leaves (the leaves that look like tomato leaves, not the smooth seed leaves). Bury any leggy or weak stem — roots will form along the buried portion and create a stronger plant. Firm the soil around the base, water well, and place the pot in its final location before the plant gets large.

If you are starting from seed, fill the pot with moist potting soil, plant seeds about 1/4 inch deep, cover loosely with plastic or a humidity dome, and keep the soil warm (70 to 75 degrees Fahrenheit) and moist until sprouts appear in 5 to 10 days. Remove the cover once sprouts emerge and move the pot to bright light when ready — a sunny window or grow light works.

Watering and moisture management

Cherry tomatoes in pots need water every day or every other day once they are growing, depending on pot size, soil type, and heat. Check the soil by pushing your finger 1 inch into it — if it feels dry, water. If it feels moist, wait. Do not water on a fixed schedule; heat and humidity change how fast soil dries.

Water at the base of the plant, not on the leaves, to reduce disease. Water deeply until it drains from the bottom — shallow watering encourages shallow roots and weak plants. In very hot weather (above 85 degrees Fahrenheit), you may need to water twice a day. In cool or cloudy weather, every other day or every three days may be enough.

Mulch the soil surface with 1 to 2 inches of straw or shredded leaves to keep it cooler and reduce evaporation. Leave a small gap around the stem so air can circulate and prevent rot.

Light and placement

Cherry tomatoes need at least 6 to 8 hours of direct sun per day to flower and set fruit. More sun is better — 10 to 12 hours produces more flowers and faster ripening. Place the pot in a spot that gets morning sun, which also helps dry dew and reduce fungal disease.

If you are growing on a patio or balcony, position the pot where it gets sun but is sheltered from strong wind, which can dry the soil too fast and damage flowers. If your area has intense afternoon heat (above 95 degrees Fahrenheit), afternoon shade may actually help the plant set more fruit, because extreme heat can cause flowers to drop.

Staking and supporting the plant

Cherry tomato plants grow 3 to 4 feet tall and need support. Install a stake or cage when you plant, not later — waiting until the plant is large risks damaging roots. A single bamboo stake tied loosely with soft twine works well for determinate (bush) varieties. A cage or spiral stake works for indeterminate (vining) varieties that keep growing all season.

Tie the main stem to the stake every 8 to 12 inches as it grows, using a figure-eight knot so the twine does not cut into the stem. Prune suckers (shoots that grow between the main stem and branches) on indeterminate varieties to direct energy into fruit rather than foliage, but leave them on determinate varieties — they produce flowers.

Feeding and nutrients

Potting soil contains some nutrients, but they deplete quickly as the plant grows and water drains through. Start feeding once the plant flowers, using a balanced fertilizer (equal nitrogen, phosphorus, and potassium) or a tomato-specific fertilizer. Follow the package rate and feed every two weeks.

Tomatoes need more phosphorus and potassium once they flower to support fruit development, so a fertilizer labeled for tomatoes or vegetables (usually something like 5-10-10) works better than a general-purpose formula. You can also use compost tea or fish emulsion every two weeks. Do not overfeed — too much nitrogen produces leafy plants with few flowers.

Harvesting and extending the season

Cherry tomatoes start producing fruit 60 to 85 days after transplant, depending on variety and sun. Pick fruit when it is fully colored but still slightly soft — it will ripen off the vine if picked at the "breaker stage" (when the first blush of color appears). Picking regularly encourages the plant to produce more flowers.

In fall, as nights cool, the plant slows flowering and fruiting. You can extend the season by moving the pot to a warmer spot or covering it with a frost cloth on cold nights. Once frost arrives, the plant dies, but you can harvest all remaining fruit (even green ones) and ripen them indoors in a paper bag with a ripe banana or apple, which releases ethylene gas and speeds ripening.

Frequently Asked Questions

Can I use regular garden soil instead of potting soil?

No. Garden soil compacts in a pot and prevents water and air from moving through it, which causes root rot and poor growth. Potting soil is formulated to stay loose and drain well in containers. The extra cost is worth it.

How often should I water if it rains?

Check the soil after rain — if the top inch is wet, skip watering. If only the surface is wet but the soil below is dry, water anyway. Rain often does not soak deep enough to reach pot soil, especially if the pot is under an eave or overhang.

What if the plant flowers but no fruit appears?

Fruit fails to set when temperatures are too hot (above 90 degrees Fahrenheit at night), too cold (below 55 degrees Fahrenheit), or when the plant is stressed by irregular watering or too much nitrogen. Check watering consistency and move the pot to afternoon shade if heat is extreme. Reduce nitrogen fertilizer and wait — fruit usually sets once conditions improve.

Can I grow cherry tomatoes indoors under a grow light?

Yes, but the plant needs 12 to 16 hours of light per day and good air circulation (a small fan helps). Indoor plants also need hand-pollination — brush the flowers with a small brush or shake the pot gently when flowers open, because there are no bees indoors to do it.

What pests should I watch for in potted cherry tomatoes?

Aphids, spider mites, and whiteflies are common on container tomatoes because they are often in warm, sheltered spots. Spray the undersides of leaves with water to dislodge pests, or use insecticidal soap if the problem is severe. Check plants weekly so you catch pests early.