I have watched more tomato plants die than I care to admit. Overwatered ones. Sunburned ones. One memorable plant that a hornworm ate down to a green stick in three days.
Here is the good news: every single failure taught me something, and growing tomatoes is not actually hard. You just need to get a handful of decisions right, in the right order.
This guide walks you through all of them. Seed to harvest, nothing skipped.
Let’s grow some tomatoes.
The Short Version (If You Only Read One Thing)
Growing tomatoes comes down to seven moves:
- Pick a variety that fits your space and season
- Plant after your last frost, never before
- Give them 6 to 8 hours of direct sun
- Bury two thirds of the stem when you plant
- Water deeply and consistently, then mulch
- Support the plant before it needs it
- Pick fruit at the first blush of color
That is the whole game. Everything below is the how and the why.
Pick the Right Tomato Variety
Most tomato problems start before the seed ever touches soil. People pick the wrong plant for their situation.
Here is the one thing you must know: every tomato is either determinate or indeterminate.
Determinate tomatoes (also called bush tomatoes) grow to a fixed size, around 3 to 4 feet, produce one big flush of fruit, and then wind down. They are perfect for pots, small spaces, and canning, since the harvest arrives all at once.
Indeterminate tomatoes are vines. They keep growing and keep producing until frost kills them. Give them a tall support and a long season, and one plant can hit 6 to 10 feet and feed you for months.
Beyond that, match the tomato to the job. Cherry tomatoes for snacking. Big slicers for sandwiches. Meaty paste types like Roma and San Marzano for sauce. Our variety library covers them in depth, and if you want a shortcut, the Variety Finder quiz matches you with the right tomato in about twenty seconds.
My honest advice for first timers? Grow one cherry tomato and one slicer. Cherries are nearly impossible to fail with, and the slicer teaches you everything else.
When to Plant Tomatoes
Tomatoes have one rule they will die enforcing: no frost, ever.
Your entire schedule counts backward and forward from one date: your average last spring frost. Not the calendar. Not what the garden center is selling. Your frost date.
Here is the timeline that works:
- 6 to 8 weeks before last frost: start seeds indoors
- 1 to 2 weeks after last frost: transplant outside, once nights stay above 50 F (10 C)
- 55 to 85 days after transplant: first ripe tomatoes, depending on variety
Planting too early is the classic beginner mistake, and I get why. One warm week in April and every fiber of your being says GO. Resist. Tomatoes planted in cold soil just sit there sulking, turning purple, and waiting for warmth. Plants set out two weeks later almost always catch up and pass them.
Want your exact dates without the math? Drop your frost date into our planting date calculator and it builds your whole timeline.
Starting Seeds vs Buying Plants
Both are fine. Really.
Buy plants if you want easy, you only need a few, or you are starting late. Choose stocky, deep green plants about as wide as they are tall. Skip anything leggy, yellowing, or already flowering in its tiny pot.
Start from seed if you want varieties the garden center never carries (this is where it gets fun), or you are growing lots of plants on a budget. A packet of seeds costs less than one nursery plant.
Seed starting in four lines:
- Sow a quarter inch deep in seed mix, keep it moist and warm (70 to 80 F germinates fastest)
- Seedlings appear in 5 to 10 days; give them strong light immediately or they stretch
- Pot them up once when they have a few real leaves
- Harden off before transplanting: 7 to 10 days of gradually longer outdoor visits, starting in shade
That hardening off step is not optional. Indoor seedlings have never met real sun or wind. Skip the adjustment period and they scorch white within a day. I learned that one the expensive way.
Where to Plant: Sun and Soil
Tomatoes are solar powered. 6 hours of direct sun is the minimum. 8 is better. There is no trick, no variety, no fertilizer that fixes a shady spot. If your garden gets 4 hours of sun, grow lettuce there and put your tomato somewhere else.
Soil matters less than people fear, as long as it drains. The wish list:
- Rich in organic matter (dig in a few inches of compost, it fixes most soils)
- Drains well, because tomato roots sitting in water rot
- Slightly acidic, pH 6.2 to 6.8, which most garden soil already is
One more thing worth checking: what grew there before. Do not plant tomatoes where tomatoes or potatoes grew last year, because they share diseases that survive winter in the soil. Rotate spots on a 3 year cycle if you can.
Growing in a raised bed instead of open ground? The numbers change a little, and our raised bed tomato guide covers the depth, spacing, and soil mix that actually work.
And mind the neighbors. Basil, marigolds, onions and carrots are great beside tomatoes. Potatoes, corn, fennel and the whole cabbage family are not. Full verdicts on 29 plants live in the companion plants checker.
How to Plant Tomatoes the Right Way
This is where I get to share the single best tomato trick I know.
Bury the stem. Deep.
Tomatoes do something almost no other vegetable does: they grow roots from any buried part of the stem. So strip the lower leaves and plant that seedling so two thirds of it is underground. Yes, really. A 12 inch seedling should end up as a 4 inch plant sticking out of the soil.
That buried stem turns into a massive root system, and a massive root system is drought resistance, nutrient uptake, and a plant that shrugs off heat waves.
If your soil is heavy or cold, plant in a trench instead: lay the plant sideways in a shallow trench, cover the stem, and gently bend the top up. Same result, warmer soil.
Spacing: 18 to 24 inches between determinate plants, about 24 inches for staked indeterminates, with 3 to 4 feet between rows. Crowded tomatoes trade airflow for disease and give you less fruit, not more. If you are planning a whole bed, the spacing calculator does the layout math for you.
Water everything in deeply, and you are planted.
Support Your Plants Before They Need It
Install your cage, stake, or trellis on planting day. Not in July when the plant is a 5 foot sprawl loaded with fruit. Driving a stake through an established root system is minor surgery, and wrestling a grown tomato into a cage is comedy for the neighbors and misery for you.
Your options:
- Cages: easiest, fine for determinates. The flimsy cone ones from the store are too small for indeterminates, so go big or make your own from field fence.
- Stakes: a 6 to 8 foot stake, with the vine tied on every 8 to 12 inches as it grows. Cheap and effective.
- Trellising: best for rows of indeterminates. A top wire and twine dropped to each plant works beautifully.
Fruit that touches soil becomes slug food and rot. Support is not decoration.
How to Water Tomatoes (Where Most People Go Wrong)
If I could fix one habit for every tomato grower, it is this one.
Water deeply and infrequently, not a little every day.
Daily sprinkles create shallow, lazy roots. A deep soak once or twice a week (1 to 2 inches of water total, more in serious heat, more often in pots) trains roots to go down, and deep roots make tough plants.
Three more rules:
- Water the soil, not the leaves. Wet foliage is how blight and leaf spot spread. Aim at the base.
- Morning is the best time, so any splashed leaves dry fast in the sun.
- Keep it consistent. The swing between bone dry and soaked is what causes cracked fruit and blossom end rot, the infamous black patch on the bottom of tomatoes. It is not a disease. It is uneven watering interfering with calcium delivery.
Then mulch. A 2 to 3 inch layer of straw, shredded leaves, or grass clippings around each plant holds moisture steady, blocks weeds, and stops soil (and soil diseases) splashing onto lower leaves when it rains. Mulch is the cheapest insurance in gardening.
Fertilizing Tomatoes Without Overdoing It
Tomatoes are hungry, but they are hungry for the right things at the right times.
The simple program:
- At planting: compost in the hole plus a balanced starter fertilizer
- When the first fruit sets: switch to a tomato fertilizer that is lower in nitrogen and higher in phosphorus and potassium
- Every 3 to 4 weeks after: repeat, following the label rate
The trap is nitrogen. Too much of it grows a gorgeous, glossy, six foot jungle of leaves with almost no tomatoes on it. If your plant looks magnificent and refuses to fruit, stop feeding it nitrogen and it will get the message.
Quick word on the famous home remedies. Coffee grounds: fine in small amounts, mostly as compost material, not a miracle. Epsom salt: only useful if your soil actually lacks magnesium, which most does not, and it does nothing to prevent blossom end rot no matter what the internet says. Compost: yes, always, forever.
Pruning Tomato Suckers (When It Matters)
Look at where a leaf branch meets the main stem. See that little shoot growing out of the joint at 45 degrees? That is a sucker, and left alone it becomes an entire new stem with its own leaves, flowers, and suckers.
The rules are mercifully simple:
- Determinate tomatoes: do not prune. Every sucker you remove is fruit you threw away, since the plant only makes so much.
- Indeterminate tomatoes: prune moderately. Snap suckers off below the first flower cluster while they are small, and keep the plant to one or two main stems if you are training it up a stake or string.
Also prune any leaves touching the ground, since they are the on ramp for soil diseases. Beyond that, do not go wild. Leaves are the sugar factory, and sunscalded fruit on an over pruned plant is a sad sight in August.
Growing Tomatoes in Pots
No garden? No problem. Some of the best tomatoes I have grown lived on a patio. Container growing just changes three numbers:
- Size: bigger than you think. 5 gallons is the working minimum per plant, 10 to 15 gallons is where big varieties get comfortable. Small pots dry out hourly and stunt everything.
- Water: more often than ground plants. In summer heat, often daily. Stick a finger two inches into the soil; if it is dry, water until it runs out the bottom. Drainage holes are non negotiable.
- Food: more often too. Constant watering washes nutrients out, so feed every 2 to 3 weeks with liquid fertilizer.
Use potting mix, never garden soil, and favor compact varieties bred for containers. Dwarf and determinate types are the honest answer here, though I have seen a Sungold happily devour a whole balcony.
Problems to Watch For
Even in a good year, something will nibble, spot, or wilt. Do not panic. Almost every tomato problem has a name, a cause, and a fix, and catching it early is 90 percent of the cure.
The big five, in one line each:
- Yellow lower leaves: usually hunger or overwatering, feed and check drainage
- Black patch on fruit bottoms: blossom end rot, fix your watering consistency
- Bullseye spots on lower leaves: early blight, strip affected leaves, mulch, water at the base
- Leaves vanishing overnight: hornworm, look for droppings and handpick the giant green culprit
- Flowers dropping without fruit: temperature stress, wait for kinder weather
For everything else, the Problems section goes deep, and the problem identifier tool walks you from symptom to fix in a few clicks.
When and How to Harvest
Here is a secret that changes everything: you do not have to let tomatoes ripen on the vine.
A tomato that has started to blush (the breaker stage) has everything it needs to finish ripening on your counter with zero loss of flavor. Picking at first blush means the birds, squirrels, bugs, and rain cracks all miss their chance. I pick at blush all season and dare anyone to taste the difference.
A fully vine ripened tomato is ready when the color is deep and even, it gives slightly to a squeeze, and it comes off the vine with an easy twist.
Two more harvest notes:
- Never refrigerate a ripening tomato. Cold kills flavor and turns the texture mealy. Counter, stem side down, out of the sun. (Full storage details are in our shelf life lookup.)
- Before first frost, pick every mature green tomato and ripen them indoors in a paper bag. A banana in the bag speeds it up.
Expect 10 to 20 pounds per healthy plant over a season. Want a number for your exact setup? The yield calculator will estimate it, and the harvest date calculator tells you when the wave arrives.
Tomato Growing FAQ
How long does it take to grow tomatoes?
From transplant, 55 to 85 days depending on variety. From seed, add another 6 to 8 weeks. Early varieties like Glacier ripen fastest; big heirlooms like Brandywine take their sweet time and are worth it. The full stage by stage timeline is in our guide to how long tomatoes take to grow.
How often should I water tomato plants?
Deeply once or twice a week in the ground, roughly 1 to 2 inches of water total. Daily in hot weather for containers. Consistency beats quantity every time.
Why are my tomato plants flowering but not making fruit?
Almost always temperature. Tomatoes drop their blossoms when nights dip below 55 F or days push past 85 F. Keep the plant watered and wait; production resumes when the weather behaves.
Do I need two tomato plants to get fruit?
No. Tomato flowers pollinate themselves, and a breeze or a gentle daily shake of the flower trusses is enough to set fruit on a single plant.
Can I grow tomatoes indoors?
Yes, with serious light: a sunny south window plus a grow light, or 14 to 16 hours under lights alone. Stick to dwarf and micro varieties. Do not expect summer harvests, but fresh cherry tomatoes in February are a real morale boost.
What is the easiest tomato for a beginner?
A cherry tomato, no contest. Sungold or Super Sweet 100 if you want candy, a Patio type if you are growing in a pot. They forgive nearly every mistake on this page.
The Growing Library
Every stage of the journey has its own deep guide. Start at the beginning with starting tomatoes from seed, move them along with our seedling transplant walkthrough, and get them in the ground right with the tomato planting guide. No garden bed? The container growing guide covers pots from soil mix to season’s end.
For the day-to-day care that decides your harvest, we cover how often to water, feeding tomatoes properly, pruning for bigger harvests, the truth about those suckers, and what to plant alongside.
Keeping plants upright is its own science: compare every option in the plant support hub, then go deep on staking done right, choosing a cage, or trellis setups that hold real weight.
Growing somewhere unusual? We have guides for tomatoes indoors, the greenhouse route, and soil-free hydroponic growing. And when the fruit finally blushes, the harvest timing guide tells you the exact moment to pick.
Then there are the questions every grower eventually asks. Whether a tomato plant is actually a perennial, how to clone a favorite plant by growing tomatoes from cuttings, and what really happens when you plant seeds from a store bought tomato. We tested all three.
Go Plant Something
That is the complete playbook: right variety, right timing, deep planting, steady water, early support, sane feeding, light pruning, and picking at the blush.
You will still lose a plant sometimes. Everyone does. The difference is that now you will know why, and next season you will be the neighbor everyone asks for advice.
Start with the variety finder, grab your dates from the when to plant calculator, and get growing.