Georgia gardeners can safely set tomato transplants outside once the risk of a 32°F freeze has passed, which NOAA’s 1991-2020 climate normals place between March 11 and March 29 for the Atlanta area. That’s a three-week range, and it runs later the farther north or higher in elevation you garden. Check your own county’s frost record through UGA Extension, then start seed indoors 6 to 8 weeks ahead of your planned transplant week.
When to plant Tomatoes in Georgia
Atlanta’s airport frost date tells you almost nothing if you garden in the foothills an hour north, where a “safe” transplant week can still end in blackened tomato leaves and a trip back to the nursery for replacements. Growers who trust that single figure and set plants out in late March often lose the whole flat to a cold snap the city never felt. The fix starts with knowing which Georgia you’re actually gardening in, then working backward from a real local frost history to a seed-starting date that gives seedlings enough time under light before they ever touch open ground.
Atlanta’s airport sits in an urban heat island, so the countryside close to the city, and especially the mountains and foothills of north Georgia, can see frost linger into April in a cold year. The coastal plain in the south of the state runs milder and often clears frost risk earlier than the Atlanta figure suggests. If you garden outside the metro area, treat March 11-29 as a starting point and confirm your own county’s frost history through Georgia guides or your local UGA Extension office before committing transplants to open ground.
Counting back to a seed-starting date
Tomato seedlings need 6 to 8 weeks indoors under light before they’re ready for the garden. Since the safe transplant stretch for most of the state runs from the tail end of the frost window into early-to-mid April, counting back 6 to 8 weeks lands on early-to-mid February for starting seed indoors. Gardeners in the mountains, where frost lingers longer, should shift both the seed-starting window and the transplant date back by a couple of weeks to match.
Sow seed a quarter inch deep in trays or cell packs and keep the medium warm with a heat mat if your house runs cool. Once true leaves appear, move seedlings under strong light, whether that’s a bright south window or a shop light held a few inches above the foliage. Leggy, pale seedlings are almost always a light problem, not a feeding problem.
Hardening off and setting out
Don’t move seedlings straight from a windowsill into open ground. Harden them off over 7 to 10 days, setting trays outside in a sheltered spot for a couple of hours the first day and building to a full day and overnight by the end of the week. Skip this step and you risk sunscald or a stunted transplant that never quite catches up. Once the frost window has passed and nights feel reliably mild, set transplants a little deeper than they sat in the pot, burying part of the stem to encourage extra roots along its length.
Soil and site preparation
Sun, drainage and bed prep
Tomatoes want at least 8 hours of direct sun a day and sharp drainage. A low spot that stays soggy after a storm will drown roots long before frost becomes a concern. If your only sunny spot has heavy clay, common across much of Georgia, build a raised bed or wide mound rather than fighting the native soil in place. A raised bed only 8 to 10 inches high usually lifts roots above compacted clay and warms faster than the ground around it in spring.
Work compost or well-rotted manure into the bed several weeks before you plant, not on transplant day. Fresh organic matter needs time to break down, and digging it in too close to planting can tie up nitrogen right when young roots need it most. A soil test through your local extension office tells you where your pH and nutrients actually stand, rather than guessing at lime or fertilizer rates and pushing the chemistry the wrong direction.
Spacing and support setup
Space determinate varieties like Celebrity Plus and Amalfi about 24 inches apart, and give sprawling indeterminate types like Cherokee Purple, Brandywine or San Marzano II closer to 30 to 36 inches, since they’ll keep growing and setting fruit until frost. Cramped spacing is the single most common reason for foliar disease in home tomato patches, because it blocks the airflow that dries leaves after rain or dew.
Set stakes, cages or trellis posts in place before or at transplanting, not weeks later once the root ball has spread. Driving a stake through an established root system sets a plant back for a week or more. If you plan to mulch, have the material ready, straw, shredded leaves or landscape fabric, so it can go down within a couple of weeks of transplanting once the soil has warmed.
Varieties that suit Georgia
Georgia’s frost-free season, once you’re past that mid-to-late March freeze window, runs long enough to carry almost any tomato to full maturity, from 55-day cherry types to 85-day paste tomatoes. The trait that matters more than days-to-maturity here is disease resistance, because Georgia’s warm, humid summers are exactly the conditions that fungal and viral tomato diseases favor.
Catalogue days-to-maturity are counted from the transplant date, not from seed, and shift by a week or two depending on the season’s heat and sun. Use them to compare varieties against each other rather than as an exact countdown.
Comparing varieties by trait
| Variety | Days to Maturity | Type | Disease Resistance | Best For |
|---|---|---|---|---|
| Sun Gold | 57 | Indeterminate | Tobacco Mosaic Virus (High), Fusarium Wilt race 1 (High) | Early, sweet snacking cherries |
| Sakura | 55 | Indeterminate | Nematodes (Intermediate), Tomato Mosaic Virus (High), Fusarium Wilt races 1,2 (High) | Fastest harvest, heavy disease pressure |
| Celebrity Plus | 78 | Determinate | Nematodes (Intermediate), Gray Leaf Spot (High), Tomato Mosaic Virus (High) | Compact space, reliable slicer |
| Amalfi | 68 | Determinate | Nematodes (Intermediate), Late Blight (Intermediate), Early Blight (Intermediate) | Sauce tomatoes with broad disease defense |
| Big Beef Plus | 72 | Indeterminate | Nematodes (Intermediate), Gray Leaf Spot (High), Tomato Mosaic Virus (High) | Large slicers, season-long production |
| Cherokee Purple | 72 | Indeterminate | None listed | Heirloom flavor where disease pressure is lower |
| San Marzano II | 78 | Indeterminate | None listed | Classic paste for canning |
| Amish Paste | 85 | Indeterminate | None listed | Long-season paste, needs the fullest window |
For a garden with a history of soilborne trouble, lean toward varieties carrying nematode or wilt resistance, such as Sakura, Celebrity Plus, Amalfi, Big Beef Plus or Granadero, rather than heirlooms like Cherokee Purple or Brandywine, which carry no listed disease resistance and depend entirely on good culture to stay healthy. Heirlooms reward that extra care with flavor hybrids rarely match, so it’s worth growing at least one alongside a resistant workhorse rather than picking one camp exclusively.
Gardeners working with a shorter frost-free stretch, like the one described in our guide to growing tomatoes in Kentucky, lean harder on the fastest-maturing varieties to beat an early fall frost. Georgia’s longer season gives more room to grow a slower heirloom like Amish Paste through to full ripeness without racing the calendar.
What to plant alongside
Good neighbors
Basil is the classic tomato companion, and it earns the spot. Dense basil plantings can distract or shelter some pest insects, and the two share water and light needs closely enough to interplant without real competition. Borage and other flowering herbs bring in pollinators and predatory insects that help control aphids and hornworms, and they’re worth tucking in at the bed’s edges for that reason alone. Nasturtiums work as a trap crop, drawing aphids to themselves and away from tomato foliage, and they’ll sprawl as a living mulch over bare soil between plants.
Marigolds are often sold on the promise that they repel root-knot nematodes around tomatoes. The evidence for that is thinner than the folklore suggests: marigolds do show a nematode-suppressing effect in research plots, but it generally requires a full season of marigolds grown as the sole crop in that soil, not a border row planted the same year as your tomatoes. Grow them for the pollinators they draw instead, which is a real and immediate benefit even if the nematode claim doesn’t hold up as sold.
Keep these away
Keep tomatoes well away from potatoes and other nightshade relatives like eggplant and peppers if you can, since they share the same fungal and bacterial diseases, including early blight and late blight, and growing them together just gives those pathogens a bigger target. Skip corn as a neighbor too, since it draws the same corn earworm moth responsible for tomato fruitworm damage, moving one pest between two crops rather than confusing it. Brassicas like cabbage and broccoli don’t share tomato diseases, but they’re heavy feeders competing for the same nitrogen, so give them their own bed rather than crowding them in nearby.
Watering, feeding and support
Water deeply and less often rather than a light daily sprinkle. Roots follow moisture, and a shallow watering habit trains them to stay near the surface, where they dry out fast in Georgia’s summer heat. Aim water at the soil rather than the foliage, since wet leaves sitting overnight are what let early blight and other fungal diseases take hold. A soaker hose or drip line under a layer of mulch does both jobs at once, delivering steady moisture at the root zone while keeping foliage dry.
Mulch and feeding
Mulch once the soil has warmed after transplanting, using straw, shredded leaves or a similar organic material 2 to 3 inches deep. It holds soil moisture, keeps weeds down, and stops rain from splashing soil-borne fungal spores onto the lower leaves. Bare soil under a tomato plant is an open invitation to early blight.
Feed at planting with a balanced fertilizer worked into the hole, then hold off on heavy nitrogen until the first fruit sets. Too much nitrogen early produces a jungle of foliage and very little fruit, since the plant puts its energy into leaves instead of flowers. Once fruit is sizing, side-dress every 3 to 4 weeks with a fertilizer higher in potassium and phosphorus relative to nitrogen, which supports fruit development rather than more vine.
Staking, caging and pruning
Indeterminate varieties like Sun Gold, Big Beef Plus and Amish Paste keep growing and setting fruit until frost, and they need a sturdy stake or cage tall enough to carry that whole season, often 5 to 6 feet. Determinate types like Celebrity Plus and Amalfi grow to a set size and set most of their fruit in a shorter window, so a standard cage is usually enough. Tie or clip the main stem to its support every foot or so as it grows, rather than waiting until the plant has flopped.
Pruning suckers, the small shoots that appear in the joint between the main stem and a branch, isn’t required, but it channels the plant’s energy into fewer, larger stems and improves airflow through the foliage. Pinch them out by hand while they’re small, ideally under 3 inches, so the wound closes quickly. Skip pruning on determinate varieties, since removing growing points on a plant that only grows to a fixed size just cuts your total yield.
Common problems
Most tomato problems in Georgia trace back to the same root cause: warm, humid air holding moisture on leaves and fruit longer than a drier climate would. Reading the symptom correctly saves you from spraying the wrong thing or pulling a plant that would have recovered on its own.
Blossom end rot and cracking
A flat, sunken, leathery brown-black patch on the bottom of an otherwise healthy, ripening fruit is blossom end rot. It’s a calcium delivery problem caused by inconsistent watering in most home gardens, not a soil calcium shortage, since uneven moisture stops the plant from moving calcium to the fruit even when there’s plenty in the ground. Even, consistent watering fixes it far more reliably than adding lime or a calcium spray. Cracking, whether it’s rings circling the stem end or splits radiating down the shoulder, comes from the same root cause in reverse: a dry spell followed by a heavy rain the fruit’s skin can’t stretch to absorb fast enough. Mulch and steady watering reduce both problems together.
Wilt, leaf curl and poor fruit set
A plant that wilts starting with the lower leaves and works upward, even with wet soil, is showing a vascular wilt disease, usually fusarium or verticillium, which clogs the plant’s water-carrying tissue from the roots up. There’s no cure once symptoms show. Pull the plant to keep the pathogen from building up in the soil, and next season choose a variety bred with resistance, such as Sun Gold, Supersweet 100, Tiren or Granadero, all of which carry fusarium or verticillium resistance.
Leaf curl that rolls upward along the leaf edge without discoloration is usually just heat and moisture stress, and it corrects itself once conditions ease. Leaf curl paired with yellow mottling or stunted new growth points to a viral infection instead, most often spread by whiteflies or aphids, with no treatment beyond removing the affected plant. Poor fruit set, flowers forming and dropping without setting fruit, is common during Georgia’s hottest, most humid stretches, when pollen becomes too sticky to transfer effectively. It usually resolves once temperatures ease and new flowers open in milder conditions.
Pests to watch for
- Tomato hornworm: a large green caterpillar with pale diagonal stripes, hard to spot until damage is done. Handpick in early morning when they’re easiest to see.
- Stink bugs: leave pale, cloudy spots on ripening fruit where they’ve fed. Keep weeds nearby cut down, since they host stink bugs between crops.
- Whiteflies: tiny white insects clustered on leaf undersides that scatter in a cloud when disturbed. They spread viral disease as they feed.
- Tomato fruitworm: bores directly into developing fruit. Row cover during egg-laying periods helps more than a spray after damage appears.
Pests that actually show up in Georgia
Georgia’s official vegetable pest list, published by UGA Cooperative Extension in Bulletin 577 Home Gardening and the Georgia Pest Management Handbook Home and Garden Edition, runs to ten insects, but most of them belong to squash, cucumbers, beans and cowpeas, not tomatoes. Pickleworm, melonworm and squash vine borer feed on cucurbits. Cowpea curculio and Mexican bean beetle work legumes. If you grow those crops alongside your tomatoes, watch for them there, but don’t waste a spray on your tomato bed chasing them.
The pests that actually put holes in tomato plants and fruit are a shorter list. Aphids show up first as a cluster of small soft-bodied insects on the underside of young leaves, with the leaves curling and getting sticky with honeydew. They build up fastest in the cooler weeks of spring and again in fall. A strong water spray or insecticidal soap knocks them back before numbers get out of hand.
Cutworms announce themselves overnight: a transplant sheared clean through at the soil line, the top lying wilted next to an otherwise undamaged stem. They strike in the first two or three weeks after setting plants out. A cardboard or foil collar pushed an inch into the soil around each stem stops them cold.
Tomato fruitworm, the same insect known as corn earworm, bores a clean round hole straight into the fruit, usually near the stem end, and you’ll often find the entry hole before you find any sign of the moth itself. It arrives with the first fruit set in early summer. Bacillus thuringiensis (Bt) applied while worms are still small works far better than trying to treat established borers inside the fruit.
Spider mites show up as a fine stippling or bronzing across the leaf surface, with faint webbing on the underside in heavy infestations. Hot, dry stretches in mid to late summer favor them. Miticides or a hard water spray to the leaf undersides breaks the cycle.
Colorado potato beetle, better known on potatoes, will also strip tomato foliage down to the veins, working from the plant’s interior outward. Hand-picking adults and the bright clustered egg masses on the leaf underside controls light infestations without any spray at all.
Harvest and end of season
When to pick
Pick tomatoes once they’ve reached full color for the variety, whether that’s the deep red of Big Beef Plus, the dusky pink-purple of Cherokee Purple, or the gold-orange of Sun Gold. Fruit showing color but still firm, sometimes called the breaker stage, will finish ripening off the vine on a counter out of direct sun. That’s often the better choice late in the season when a fruit risks splitting or a pest has already found a fully ripe neighbor. Never store ripening tomatoes in the refrigerator, since cold temperatures break down the compounds responsible for flavor and turn the texture mealy.
As frost approaches
As Georgia’s growing season winds down, watch conditions rather than the calendar. North Georgia and the mountains cool off and see their first fall freeze weeks earlier than the coastal plain, so a gardener in the foothills should watch for frost warnings well before someone gardening near the coast needs to think about it. UGA Extension’s county offices track local frost history if you want a firmer sense of your own timing.
Gardeners in states with an even shorter frost-free season, like the one described in our guide to growing tomatoes in Iowa, plan their whole harvest around a single hard freeze date; Georgia’s longer, more gradual cool-down gives more flexibility for a late round of green tomatoes to ripen indoors. Once a hard freeze is forecast, harvest everything on the vine showing any color at all, including green fruit with a hint of white or pink at the blossom end, since those will still ripen indoors. Pull spent plants and clear the bed once the last fruit is in, since leaving diseased foliage in place over winter gives fungal spores a place to overwinter and reinfect next year’s crop.
Local help
Every figure on this page is measured at or near Atlanta, and Georgia is a big enough state that your county’s frost dates, soil type and pest pressure can differ meaningfully from that reference point. UGA Extension runs county offices across the state offering soil testing and local planting calendars tailored to your area. Check the UGA Extension website before you finalize a planting date, especially if you garden in the mountains or along the coast, where the Atlanta-based frost window doesn’t apply directly.
Where to Go From Here
The freeze dates above are only the starting point, and three other pages work through what they mean in practice. If you want the actual dates to circle on your calendar, counting back from your frost window walks through how growers use that March 11 to March 29 last-freeze range to time their planting rather than picking a fixed date. Once you know when you’re planting, the question becomes what to plant, and tomato varieties that ripen in time lays out which types actually fit inside the stretch between that last spring freeze and the first fall freeze in November or December. And since a long frost-free season also means a long season for trouble, tomato pests in Georgia covers which ones actually show up here, using that same eight-month Atlanta window as the backdrop. Read together, the three pages cover the whole arc of a Georgia tomato crop: when to put plants in the ground, what to put in the ground, and what to watch for once it’s growing.
Common questions
Can I plant tomatoes earlier than March in Georgia if I use a row cover?
You can push the date earlier with frost protection, but a row cover only buys a few degrees against a light frost, not a hard freeze. NOAA’s Atlanta normals put the last spring freeze anywhere from March 11 to March 29, so a cover might carry seedlings through the tail end of that window but won’t reliably protect against a freeze on the early end of the range.
Why don’t my Cherokee Purple tomatoes have resistance traits like the hybrids?
Heirloom varieties like Cherokee Purple, Brandywine, San Marzano II and Amish Paste were bred before modern disease-resistance testing existed, so they carry no listed resistance codes. That doesn’t mean they’ll definitely get sick, only that they depend more heavily on spacing, airflow, mulch and crop rotation to stay healthy than a hybrid bred with those genes built in.
Is it too late to start tomato seeds indoors if I missed the February window?
Buying started transplants from a local nursery is a reasonable fallback, and even experienced gardeners do it some years. You’ll have fewer variety choices than growing from seed, but a nursery transplant set out within the safe window still has a full season ahead of it.
Can I grow tomatoes in containers instead of in the ground in Georgia?
Yes, and it’s often easier than fighting heavy clay, since a container gives you full control over the growing medium. Choose a container at least 5 gallons for a determinate variety like Celebrity Plus or Amalfi, and 10 gallons or more for a sprawling indeterminate like Big Beef Plus, since container soil dries out faster than ground soil and needs more frequent watering as a result.
Do I need to rotate tomatoes to a different bed each year?
Rotating tomatoes and their nightshade relatives, peppers, eggplant and potatoes, away from the same bed for two to three years helps break the cycle of soil-borne diseases like fusarium and verticillium wilt, which can persist in soil long after an infected plant is removed. If you only have one sunny spot, growing resistant varieties and refreshing the soil with compost each year reduces the risk, though it won’t eliminate it the way rotation does.