Plant cherry tomatoes after your last spring frost, when soil reaches 60°F

Cherry tomatoes need warmth to germinate and grow. Plant seeds indoors 6 to 8 weeks before your last expected frost date, or buy transplants and move them outside after that frost has passed. Soil temperature matters more than air temperature — if the ground is still cold, seeds will rot and transplants will sit dormant instead of growing.

You can find your last frost date by searching your zip code on the National Weather Service website or asking at a local garden center. Once soil reaches 60°F (ideally 65–70°F for faster growth), cherry tomatoes are ready to go in the ground or a container.

Key Takeaways

  • Start seeds indoors 6 to 8 weeks before your last spring frost, or buy transplants and plant them outside after that date.
  • Wait until soil temperature is at least 60°F before planting, even if air temperature is warmer.
  • Cherry tomatoes grow in containers, raised beds, or garden soil as long as they get 6 to 8 hours of direct sun daily.
  • Space plants 24 to 36 inches apart to allow air circulation and reduce disease.
  • In warm climates, you can plant a second crop in mid-summer for a fall harvest.

Starting seeds indoors versus buying transplants

Starting from seed costs less and gives you more variety choices, but requires grow lights and takes 6 to 8 weeks. Buy a seed-starting mix (not garden soil), fill small pots or trays, and keep the soil moist at 70–75°F. Once seedlings sprout and develop their first true leaves (the second set of leaves that appear), move them under a grow light 2 to 3 inches above the tops, keeping lights on for 14 to 16 hours daily.

Buying transplants from a garden center or nursery is faster and requires no equipment. Look for stocky plants with dark green leaves and no flowers yet — plants already flowering have used energy that should go into roots. Harden off transplants by setting them outside in shade for a few hours, then gradually increasing sun exposure over 7 to 10 days before planting.

Soil preparation and planting depth

Cherry tomatoes prefer soil rich in organic matter. Mix compost or aged manure into the top 8 to 12 inches of garden soil before planting. If you are using containers, fill them with potting mix (not garden soil), which drains better and holds moisture more evenly.

Plant transplants deeper than they were growing in their pots — bury the stem up to the first true leaves. Tomatoes will develop roots along the buried stem, creating a stronger root system. Space plants 24 to 36 inches apart so air can flow between them, which reduces fungal disease. Water gently after planting and keep soil consistently moist (not waterlogged) for the first two weeks while roots establish.

Sunlight and container requirements

Cherry tomatoes need 6 to 8 hours of direct sun daily to produce fruit and develop flavor. Choose a spot that gets morning sun — this dries dew and reduces disease. If you live in a very hot climate (over 95°F regularly), afternoon shade helps prevent sunscald on fruit.

Containers must be at least 5 gallons for a single plant, though 10 gallons is better for sustained growth. Drill drainage holes in the bottom if they are not already there. Containers dry out faster than garden soil, so check moisture daily once plants are established. Cherry tomatoes in containers often need staking or caging to support the weight of fruit.

Planting timing in different climates

In cool climates (zones 3–5), plant transplants outdoors after your last frost date, usually late May or early June. You can start seeds indoors in March or April. In moderate climates (zones 6–8), plant in mid-April through May. In warm climates (zones 9–11), you have two windows: plant in early spring (February–March) for a summer harvest, or plant in mid-summer (July–August) for a fall harvest when temperatures cool.

If you plant too early and a late frost threatens, cover plants with row covers or blankets overnight. Remove covers during the day so plants get sun and don't overheat. If frost kills above-ground growth, the plant may regrow from the roots if the stem was buried deep enough.

Watering and fertilizing after planting

Water deeply and consistently — cherry tomatoes need about 1 to 2 inches per week, depending on rainfall and heat. Water at the base of the plant in the morning to keep foliage dry. Inconsistent watering causes blossom-end rot (dark spots on the bottom of fruit) and fruit cracking.

Once plants flower, feed them every 2 to 3 weeks with a balanced fertilizer (like 10-10-10) or a tomato-specific formula. Too much nitrogen encourages leafy growth at the expense of fruit. If you mixed compost into the soil at planting, you may not need additional fertilizer for the first month.

Staking, pruning, and disease prevention

Cherry tomato plants grow tall and produce heavy fruit. Install stakes or cages at planting time — driving them in later damages roots. Tie stems loosely to stakes with soft ties or cloth strips, leaving room for the stem to grow thicker.

Prune suckers (shoots that grow between the main stem and branches) on indeterminate varieties to direct energy into fruit production. Determinate varieties (bush types) need less pruning. Remove lower leaves once the plant is established to improve air circulation and reduce soil-borne disease. Space pruning cuts a few days apart so the plant is not stressed all at once.

Frequently Asked Questions

Can I plant cherry tomatoes in spring if my area gets late frosts?

Yes, but wait until after the last frost date. If you plant early and frost kills the plant, you lose weeks of growth. Use a frost calendar for your zip code to know the safe date. If an unexpected frost is forecast after planting, cover plants overnight with blankets or row covers.

How deep should I bury the transplant?

Bury the stem up to the first set of true leaves (the second set that appears). Tomatoes develop roots along the buried stem, which strengthens the plant. The buried portion will not rot as long as soil drains well and you do not pile soil against the main stem above ground.

What if I plant too late in the season?

Cherry tomatoes need 60 to 85 days from planting to first fruit, depending on variety. If you plant after mid-summer in cool climates, plants may not produce before frost. In warm climates, a mid-summer planting works well for a fall harvest. Check the days-to-maturity on the seed packet or transplant label.

Do cherry tomatoes need a cage or stake?

Yes, most varieties benefit from support. Cherry tomato plants grow 3 to 6 feet tall and produce many fruits that weigh down branches. A cage or stake keeps fruit off the ground, improves air circulation, and makes harvesting easier. Install support at planting time to avoid damaging roots later.

Can I plant cherry tomatoes in a pot indoors year-round?

Indoors, plants struggle without strong natural light and good air circulation. A grow light helps, but indoor plants often produce less fruit and attract more pests. They work best as a temporary solution or in a sunny window during the growing season, then moved outside when weather permits.