Georgia’s tomato planting date is set by the last spring freeze, not by a date on the calendar. NOAA’s 1991-2020 climate normals for the Atlanta station put that freeze at March 11 to March 29, and growers typically wait another one to three weeks past it for the soil to warm before setting out transplants. Pull up your own county’s last-frost data before you commit a flat of seedlings to the garden, since Atlanta’s number runs early for the mountains and late for the coastal plain.
What this comes down to in Georgia
March 11 to March 29 is when Atlanta’s last frost typically falls, but that date alone won’t tell you when to put a tomato in the ground. Cold soil stalls roots even after the freeze risk passes, so the real transplant window lands a week or two later — late March into mid April. That lag is the whole reason for counting backward instead of circling one date on the calendar, and it’s the same math behind the ripening dates for varieties grown here.
Tomatoes don’t just need frost to be over. The soil has to have warmed enough for roots to grow, which is why the practical transplant window sits a week or two after the last-frost date rather than on top of it. For the Atlanta area that puts transplanting in the late March to mid April range, a figure that already accounts for both the frost risk and the lag for soil warming. That window is the same one used to calculate the catalog dates on the Tomato Varieties That Ripen in Time in Georgia page, so the two pages agree with each other rather than each inventing its own date.
The table below lines up the three reference points side by side, all measured at the same Atlanta station, so you can see how one freeze date drives the next.
| Milestone | Date range | Source |
|---|---|---|
| Last spring frost | March 11 to March 29 | NOAA NCEI, 1991-2020 normals, Atlanta |
| Practical transplant window | Late March to mid April | Calculated from the frost window plus soil-warming lag |
| First fall frost | November 13 to December 1 | NOAA NCEI, 1991-2020 normals, Atlanta |
Once you have that transplant window, the rest of the season is just counting forward. A gardener growing tomatoes in Georgia for the first time usually loses more of the season to guessing at this step than to any pest or disease that shows up later.
Working it out for your own garden
Counting Back From the frost window
Start from the fall side of the season if you want to know your outer limit, and from the spring side if you want to know when to actually plant. NOAA’s Atlanta normals put the first fall frost at November 13 to December 1. A tomato needs its full days-to-maturity count, measured from transplant, plus a few extra weeks of picking before that freeze shuts things down. Subtract a variety’s days-to-maturity from that fall window and you get another range, not a single date. That’s the whole method: a range in, a range out, never a point figure pulled out of the range for convenience.
Going the other direction, from spring: NOAA’s last-frost window for Atlanta is March 11 to March 29. Add roughly one to three weeks for the soil to reach a temperature tomato roots can actually use, and you land on the late March to mid April transplant window that appears throughout the catalog data for this state. If your county’s last-frost date runs a week or two later than Atlanta’s, as much of north Georgia does, slide that whole window later by the same amount rather than planting on Atlanta’s calendar.
The margin between a variety’s finish date and the first fall frost is what tells you whether a long-season paste tomato is worth the risk in a given year. A 57-day cultivar transplanted in the late March to mid April window finishes in early June, which leaves well over a hundred days of cushion before any fall frost arrives. An 85-day cultivar transplanted in that same window finishes in early July, still comfortably inside the season, but with less room to absorb a cool, slow spring or a transplant date pushed later than planned. That shrinking cushion, not the frost date itself, is the number worth watching once you start picking varieties.
What changes across the state
North to south is not one climate
Atlanta’s frost window is a starting point, not a statewide instruction. Elevation moves the last-frost date later and the first-fall-frost date earlier, so the mountain counties of north Georgia lose growing season on both ends compared to Atlanta’s normals. Gardeners there should expect to transplant later than the late March to mid April window and to bring the season to a close earlier than the November 13 to December 1 range would suggest.
The coastal plain runs the opposite direction. Distance from the coast and lower elevation both push the growing season longer, with a milder finish to fall and often an earlier safe transplant date than the Atlanta figure implies. Gardeners in south Georgia routinely get away with setting tomatoes out earlier than the Atlanta window and picking later into fall than the Atlanta frost date would predict.
Atlanta itself skews the numbers in one specific way worth knowing: the station sits at an urban airport, and urban heat holds the local frost date later in spring and pushes it earlier in fall compared to the open countryside immediately around the city. That means Atlanta’s own normals are already a slightly generous estimate for anyone gardening in a rural pocket nearby, let alone across the rest of the state. A few things worth checking for your own spot:
- How much higher or lower your elevation sits compared to Atlanta’s roughly 1,000-foot station elevation
- Whether you’re within a few miles of the coast, where the frost window runs later into fall
- Whether your garden sits in a low frost pocket that collects cold air on clear, still nights
The mistakes this state punishes
The most expensive mistake in Georgia is trusting a warm week in March. The state’s spring weather swings hard, and a run of 70-degree days inside the NOAA frost window (March 11 to March 29 for Atlanta) is not a signal that the freeze risk has passed. Planting into soil that’s still cold sets a tomato back for weeks even if it survives, because root growth stalls in cold soil well before the plant shows any visible damage.
The second mistake is picking a long-season cultivar without checking its margin against the fall frost. An 85-day paste tomato like Amish Paste still finishes with real room to spare when transplanted in the late March to mid April window, but that margin shrinks fast if the transplant date slips into May or if a cool spring delays the first harvest. Growers who transplant late and choose a long-season variety in the same year are stacking two risks instead of managing one.
The third mistake is timing decisions around pest pressure rather than around the frost calendar, which is really a separate problem with its own season-specific answers covered on the Tomato Pests in Georgia: Which Ones Actually Show Up Here page. Conflating the two leads gardeners to delay planting for a pest concern that has nothing to do with frost risk, which costs season length for no real benefit.
Checking this against your county
Everything above is built from a single Atlanta-area station, and Georgia is a big state with a lot of elevation change and a long coastline. Before you commit to a transplant date, call your county office of the UGA Extension service and ask for the frost data specific to your area. UGA Extension publishes county-level guidance that will confirm whether your local window sits earlier, later, or roughly in line with the Atlanta figures used here.
Common questions
Can I plant tomatoes earlier if I use a cold frame or row cover?
Row covers and cold frames buy you a few degrees of protection, not immunity from frost. They can let you transplant a bit earlier inside the season’s shoulder, but they won’t reliably carry a plant through a hard freeze, so it’s still worth watching NOAA’s frost window rather than assuming the cover solves the problem.
What if I miss the spring window entirely?
A missed spring window usually still leaves room for a shorter-season cultivar, since even a late transplant in the following weeks can finish well before the November-to-December fall frost range. Check a variety’s days-to-maturity against however much of the season is left rather than skipping the year altogether.
Does the transplant date change if I start seeds indoors versus buying starts?
No. The transplant window is about when it’s safe to put a plant in the ground outside, regardless of whether you grew it from seed or bought it as a start. Seed-starting timing is a separate calculation, working backward from that same transplant window by the number of weeks a seedling needs indoors.
Is it worth planting a second round of tomatoes in summer for a fall crop?
It can work in the milder parts of the state, but it depends heavily on how much margin a cultivar has before the first fall frost in your specific area. Check a variety’s days-to-maturity against your local fall frost date before committing garden space to a second planting.