When to plant in Hardeeville, SC
USDA Zone 9aHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Hardeeville, South Carolina — all computed from Hardeeville's nearest NOAA weather station.
With about 273 frost-free days, Hardeeville supports back-to-back plantings; stagger sowings every few weeks to keep beds productive spring through fall. These dates come from a station roughly 24 km away, the closest with full normals; terrain around Hardeeville (elevation, water, pavement) can move your real frost dates a few days either way. Zone 9a is warm enough that Hardeeville 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 Hardeeville’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 Hardeeville, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 37 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.
Hardeeville planting FAQ
When is the last spring frost in Hardeeville, SC?
Hardeeville's average last spring frost falls near March 2 — the 50% mark at 32°F in the 1991–2020 normals. Hold tender transplants until the risk has passed, then plant out.
When is the first fall frost in Hardeeville, SC?
Expect Hardeeville's first fall frost near November 30 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Hardeeville in?
Hardeeville is in USDA hardiness zone 9a. In zone 9a, winters are mild — many tender perennials overwinter here.
How long is the growing season in Hardeeville?
There are roughly 273 frost-free days in Hardeeville (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 Hardeeville?
In Hardeeville, 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 Hardeeville
An email when it’s time to start seeds, transplant, and sow — timed to Hardeeville’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Bluffton · 14 km
- Rincon · 18 km
- Port Wentworth · 19 km
- Garden City · 26 km
- Pooler · 29 km
- Hilton Head Island · 31 km
- Port Royal · 33 km
- Wilmington Island · 33 km
Frost dates recorded at SAVANNAH INTL AP, 24 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 Hardeeville, SC — Frost Dates & Zone 9a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00003822. Retrieved from https://blissgarden.com/south-carolina/hardeeville.