South Carolina’s growing season near Charleston runs from a last spring freeze that NOAA’s 1991-2020 climate normals place between February 28 and March 17, to a first fall freeze between November 20 and December 5. That is roughly eight months of frost-free ground, which is long enough for every cultivar in this list to set fruit and ripen with time to spare. The variety that fits your garden depends less on squeezing in more days and more on what you actually want to pick: a bowl of cherry tomatoes by early summer, a beefsteak for sandwiches, or a paste tomato to can. Check your own county’s frost dates against Charleston’s before you lock in a transplant date, since Tomato Planting Dates in South Carolina: Counting Back From Your Frost Window walks through that county-by-county adjustment.
What this comes down to in South Carolina
A late-April transplant of a 75-day slicer looks fine on the seed packet and then meets a Charleston frost date that was never really 179 days away to begin with — it was 130, once June heat stalled fruit set and the countdown quietly reset. That gap between the days-to-maturity number and the actual calendar is where whole harvests go missing. Sakura and Sun Gold don’t leave that kind of room for error, which is the point.
Sakura
Sakura reaches its first ripe fruit about 55 days after transplant, making it one of the fastest cherry tomatoes in this list. It carries intermediate resistance to nematodes and high resistance to tomato mosaic virus and both common races of fusarium wilt, which matters in soil that has grown tomatoes before. Set out in the mid to late March window, it leaves roughly 179 days of margin before the Charleston-area frost arrives, so it is more about early snacking tomatoes than about racing the calendar.
Sun Gold
Sun Gold matures in about 57 days from transplant and produces small orange cherry tomatoes prized for sweetness. It resists tobacco mosaic virus and one race of fusarium wilt, both rated high. With the same mid to late March transplant window, it carries about 177 days of margin, which is plenty of room even for a gardener who transplants on the late end of the range.
Juliet
Juliet needs about 60 days from transplant to first ripe fruit and produces elongated grape-type tomatoes on a vigorous indeterminate vine. It has intermediate resistance to both late blight and early blight, two diseases that show up in South Carolina’s humid summers. Its margin near Charleston runs about 174 days, comfortable enough that a cool, wet spring that delays transplanting by a week or two still leaves the crop finishing well ahead of frost.
Supersweet 100
Supersweet 100 also finishes around 60 days from transplant and is one of the heaviest producers of small red cherry tomatoes in this group. It resists verticillium wilt and one race of fusarium wilt, both at a high level, useful in beds that have carried tomatoes for several seasons. Margin near Charleston sits around 174 days.
Amalfi
Amalfi is a determinate paste tomato reaching about 68 days from transplant, with intermediate resistance to nematodes, late blight and early blight. Its compact habit and dense flesh suit sauce-making more than fresh eating. With roughly 166 days of margin, it comfortably finishes well before the first fall freeze even on a cool, wet spring.
Cherokee Purple
Cherokee Purple is a heirloom beefsteak needing about 72 days from transplant to first fruit, prized for its dusky purple-pink flesh and rich flavor. It carries no listed disease resistance, so it depends more on crop rotation and airflow than the hybrids around it. Its margin near Charleston is about 162 days, still generous.
Celebrity Plus
Celebrity Plus is a determinate slicer at about 78 days from transplant, bred with resistance to nematodes, gray leaf spot and tomato mosaic virus, all rated intermediate to high. Its uniform round fruit suits a gardener who wants a predictable, all-purpose slicer rather than a specialty type. Margin near Charleston runs about 156 days.
San Marzano II
San Marzano II is the longest-season cultivar in this list at about 78 days from transplant, an indeterminate paste tomato with the classic elongated shape used for canning sauce. It carries no listed disease resistance package, so it leans on rotation and staking for support through a long harvest. Even at 78 days it still finishes with about 156 days of margin near Charleston, which tells you how much slack this region’s season actually has.
Working it out for your own garden
The method behind every one of those margin figures is simple arithmetic, and it works the same way for a cultivar not on this list. Start from NOAA’s Charleston-area frost windows: last spring frost February 28 to March 17, first fall frost November 20 to December 5. Subtract nothing from the front end, since these varieties are all set out as transplants after the spring frost risk drops, in the mid to late March window the catalogue dates already assume. Add the days-to-maturity figure to the transplant date, then compare that ripening date to the fall frost range.
A short-season example
Take Sakura, at 55 days from transplant. Transplanted in mid to late March, it reaches first ripe fruit in late May. Counting forward from late May to the November 20 to December 5 frost window leaves about 179 days of slack, more time than the plant needs to keep producing through summer.
A long-season example, and where the line moves
Now take San Marzano II at 78 days. Transplanted in the same mid to late March window, it ripens in mid June and still finishes with about 156 days of margin before the Charleston-area frost. Near Charleston, in other words, none of the eight cultivars above actually run out of season. The line shows up when you move inland: in the Upstate, where the frost window tightens by several weeks at both ends, that same 156-day margin shrinks, and a long-season paste tomato started late in a wet spring could be caught closer to the fall frost than a gardener expects. That is the scenario worth watching, not a shortage of season at the coast.
For the general steps of setting a transplant date from your own frost window, Tomato Planting Dates in South Carolina: Counting Back From Your Frost Window covers the county-level adjustments this page doesn’t.
What changes across the state
The Charleston-area figures from NOAA describe one station near the coast, and South Carolina is not one climate. Moving inland from the coast, elevation climbs and the moderating effect of the ocean fades, which pushes the last spring frost later and pulls the first fall frost earlier. NOAA’s own caution on this data set notes that peninsular Charleston itself runs milder than the airport station used for these normals, and that the Upstate runs several weeks tighter at both ends of the season than the Lowcountry does.
That tightening matters most for the longer-season cultivars in this list. Celebrity Plus and San Marzano II, both at 78 days, still finish with room to spare near Charleston, but a gardener in the foothills working with a shorter window should treat that same 78-day figure as having less cushion behind it. The USDA’s hardiness zone map puts the state across a 7a to 9a range, another sign of how much the coast-to-Upstate gradient shifts growing conditions, even though a single zone number doesn’t translate directly into a frost date.
Elevation and distance from the coast aren’t the only variables. Low-lying fields that collect cold air on clear nights can run colder at dawn than a nearby slope, delaying safe transplant dates by more than the regional average would suggest. None of this changes which cultivars exist or their catalogue days to maturity, but it does change how much margin you should assume you have before committing to a longer-season variety.
The mistakes this state punishes
The most common mistake in this state is planting into cold soil after a warm stretch in late winter. A run of 70-degree days in February can tempt a gardener to set out transplants before the actual frost risk has passed, and a late freeze inside NOAA’s 30 to 70 percent probability window will set the plants back or kill them outright even though the calendar says spring.
The second mistake is choosing a long-season variety for a garden that doesn’t have the season to support it, which mostly means gardens well inland from Charleston. San Marzano II and Celebrity Plus both finish comfortably at the coast, but the same 78-day figure eats into a much thinner margin in the Upstate, where the window is several weeks tighter on both ends.
- Don’t trust a warm February week as proof the frost risk is over.
- Don’t plant a 75-plus day cultivar late in the transplant window if you’re well inland.
- Don’t skip disease resistance ratings in a bed that’s grown tomatoes for several years running.
The third mistake is ignoring what shows up in the garden once the plants are established. Watching for the insects and diseases that actually appear on growing tomatoes in South Carolina matters as much as picking the right variety, and Tomato Pests in South Carolina: Which Ones Actually Show Up Here covers what to watch for once fruit starts to set.
Checking this against your county
Every figure above is anchored to one NOAA station near Charleston, and it will not match your county exactly if you garden somewhere else in the state. Clemson Extension maintains county offices across South Carolina, and its extension service is the right place to confirm local frost dates and tomato guidance before you finalize a planting date. A state-wide range is a starting point for the conversation with your county office, not a substitute for it.
Common questions
Can I still plant a 78-day tomato if I’m getting a late start?
Near Charleston, yes, since even the longest-season cultivar here still finishes with well over a hundred days of margin before the first fall frost. Further inland, where the season is tighter, a late transplant of a 78-day variety leaves much less room for a hot, dry stretch to slow ripening.
Do cherry tomatoes actually ripen faster than beefsteaks here?
Generally yes, and Sakura, Sun Gold, Juliet and Supersweet 100 all reach first ripe fruit in about 55 to 60 days from transplant, compared to 72 to 78 days for Cherokee Purple, Celebrity Plus and San Marzano II. That gap is about fruit size and plant type, not about anything specific to South Carolina’s climate.
Does disease resistance matter more than days to maturity here?
In a humid state, often yes. A resistant variety like Celebrity Plus or Amalfi can outproduce a faster but unprotected cultivar once early blight or nematodes take hold in the bed, even though its catalogue days-to-maturity number is higher.
Why do seed catalogues give different days-to-maturity for the same variety?
Catalogue figures are measured from transplant under average conditions, and they can shift by a week or two depending on the season, the transplant’s size at planting, and local temperature swings. Treat the printed number as a guide for comparison between varieties, not an exact countdown.