When to plant in Sumter, SC
USDA Zone 8bEverything below — frost dates, hardiness zone, and what to plant when in Sumter, South Carolina — is derived from the closest NOAA station with complete climate normals.
Zone 8b means many perennials and even some tender shrubs overwinter in Sumter, while your frost dates still decide when annuals go out.
Frost probability
SUMTER · 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 Sumter’s own odds, recorded at SUMTER.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Apr 20 | Apr 3 | Mar 18 | Oct 17 | Oct 31 | Nov 12 |
| 32°F | Apr 7 | Mar 24 | Mar 5 | Oct 28 | Nov 7 | Nov 26 |
| 28°F | Mar 30 | Mar 13 | Feb 17 | Nov 4 | Nov 21 | Dec 14 |
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 Sumter, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 29 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.
Sumter planting FAQ
When is the last spring frost in Sumter, SC?
On average, the last spring frost in Sumter is around March 24 (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 Sumter, SC?
Expect Sumter's first fall frost near November 7 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Sumter in?
Sumter is in USDA hardiness zone 8b. In zone 8b, winters are mild — many tender perennials overwinter here.
How long is the growing season in Sumter?
There are roughly 228 frost-free days in Sumter (a long growing season), running from the average last frost around March 24 to the first fall frost near November 7.
When should I plant tomatoes in Sumter?
In Sumter, start tomato seeds indoors around January 27–February 10, then transplant seedlings outdoors around March 31 once the danger of frost has passed.
Never miss a window in Sumter
An email when it’s time to start seeds, transplant, and sow — timed to Sumter’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Columbia · 48 km
- Dentsville · 54 km
- Forest Acres · 54 km
- Cayce · 59 km
- Florence · 62 km
- West Columbia · 65 km
- Orangeburg · 66 km
- St. Andrews · 67 km
Frost dates recorded at SUMTER, 4 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 Sumter, SC — Frost Dates & Zone 8b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00388440. Retrieved from https://blissgarden.com/south-carolina/sumter.