When to plant in Bluffton, SC
USDA Zone 9aHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Bluffton, South Carolina — all computed from Bluffton's nearest NOAA weather station.
Bluffton enjoys a long ~273-day frost-free season — you can succession-sow, fit in a second crop, and grow long-season heat-lovers with room to spare. Heads up: the nearest complete-normals station is about 28 km from Bluffton, so your yard's frost dates can differ — a low spot or a paved city center can shift them by a week. Zone 9a is warm enough that Bluffton can grow subtropical perennials, and the short (or absent) frost period barely limits the annual calendar.
Frost probability
SAVANNAH INTL AP · 1991–2020The date the last spring and first fall frost occur, by threshold and probability. A 90% date is later in spring — and earlier in fall — than a 10% date; the 50% · 32°F row is what most gardeners plan around. These are Bluffton’s own odds, recorded at SAVANNAH INTL AP.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Apr 6 | Mar 19 | Feb 26 | Nov 1 | Nov 16 | Dec 4 |
| 32°F | Mar 25 | Mar 2 | Feb 4 | Nov 11 | Nov 30 | Dec 28 |
| 28°F | Mar 13 | Feb 13 | Jan 15 | Nov 24 | Dec 22 | Jan 17 |
Download this table as CSV ↓ — every threshold and probability, plus this city’s planting-window dates.
What to plant now
TODAY · JULY 19Full-year planting calendar
Each bar is the exact window to take a planting action in Bluffton, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 36 km · complete 32°F normalsWhen stations disagree by more than a few days, that spread is real microclimate variation — elevation, water, urban heat. Judge which station best matches your own yard.
Bluffton planting FAQ
When is the last spring frost in Bluffton, SC?
On average, the last spring frost in Bluffton is around March 2 (50% probability at 32°F, from 1991–2020 NOAA normals). Wait until after this date to set out tender plants like tomatoes and peppers.
When is the first fall frost in Bluffton, SC?
The first fall frost in Bluffton typically arrives around November 30 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Bluffton in?
Bluffton is in USDA hardiness zone 9a. In zone 9a, winters are mild — many tender perennials overwinter here.
How long is the growing season in Bluffton?
There are roughly 273 frost-free days in Bluffton (a long growing season), running from the average last frost around March 2 to the first fall frost near November 30.
When should I plant tomatoes in Bluffton?
In Bluffton, start tomato seeds indoors around January 5–January 19, then transplant seedlings outdoors around March 9 once the danger of frost has passed.
Never miss a window in Bluffton
An email when it’s time to start seeds, transplant, and sow — timed to Bluffton’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Hardeeville · 14 km
- Hilton Head Island · 18 km
- Wilmington Island · 24 km
- Port Wentworth · 26 km
- Port Royal · 27 km
- Garden City · 27 km
- Rincon · 30 km
- Pooler · 33 km
Frost dates recorded at SAVANNAH INTL AP, 28 km from the city center · 1991–2020 NOAA climate normals · zone from the USDA/PRISM 2023 map. How we compute this.
BlissGarden. "When to Plant in Bluffton, SC — Frost Dates & Zone 9a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00003822. Retrieved from https://blissgarden.com/south-carolina/bluffton.