Gastonia, North Carolina: planting zone & frost dates
Gastonia is in USDA plant hardiness zone 8a, where the average coldest winter night reaches 10 to 15°F (-12.2 to -9.4°C). The typical last spring frost is around Apr 1 and the first fall frost around Nov 3.
Frost dates
| Probability | Last spring frost (32°F) | First fall frost (32°F) |
|---|---|---|
| Safer (10% risk) | Apr 9 | Oct 28 |
| Typical planning date (30% risk) | Apr 1 | Nov 3 |
| Median (50%) | Mar 27 | Nov 9 |
How to read this: after the spring "10% risk" date, a 32°F frost happens in only about 1 year in 10. In fall, the "10% risk" date is the early end — a frost before it happens about 1 year in 10.
Frost data comes from NOAA station GASTONIA, NC (USC00313356), 2.7 mi (4.4 km) from the city center and 39 ft lower than the city center (-12 m). Record used for the 1991–2020 normals: 24 years.
Why your yard may differ from the station: microclimates.
Hardiness zone across Gastonia
All 6 ZIP codes covering Gastonia are in zone 8a.
Vegetable planting calendar for Gastonia
Dates are counted from the 30%-risk frost dates above (last frost Apr 1, first frost Nov 3). Shift a week later in cold spots or low-lying ground.
| Crop | Start indoors | Transplant / plant out | Direct sow | Fall crop sow/plant |
|---|---|---|---|---|
| Tomato | Feb 4 – Feb 18 | Apr 8 – Apr 22 | — | — |
| Pepper | Jan 21 – Feb 4 | Apr 15 – Apr 29 | — | — |
| Lettuce | Feb 18 – Mar 4 | Mar 18 – Apr 8 | Mar 4 – Apr 15 | Aug 25 – Sep 22 |
| Green Beans | — | — | Apr 8 – May 13 | Aug 11 – Aug 25 |
| Sweet Corn | — | — | Apr 8 – May 6 | — |
| Zucchini & Summer Squash | Mar 4 – Mar 11 | Apr 8 – Apr 22 | Apr 8 – Apr 29 | Aug 11 – Aug 25 |
| Cucumber | Mar 4 – Mar 11 | Apr 15 – Apr 22 | Apr 8 – Apr 29 | Aug 11 – Aug 25 |
| Carrot | — | — | Mar 11 – Apr 15 | Aug 11 – Aug 25 |
| Onion | Jan 7 – Jan 21 | Mar 4 – Mar 18 | — | — |
| Potato | — | Mar 4 – Mar 25 | — | — |
| Basil | Feb 18 – Mar 4 | Apr 15 – Apr 29 | Apr 15 – May 6 | — |
| Spinach | — | — | Feb 18 – Mar 18 | Sep 8 – Oct 6 |
| Kale | Feb 4 – Feb 18 | Mar 4 – Mar 25 | Mar 4 – Mar 25 | Aug 25 – Sep 22 |
| Broccoli | Feb 4 – Feb 18 | Mar 18 – Apr 8 | — | Aug 11 – Aug 25 |
| Peas | — | — | Feb 18 – Mar 11 | Aug 25 – Sep 8 |
| Eggplant | Jan 21 – Feb 4 | Apr 15 – Apr 29 | — | — |
| Cabbage | Feb 4 – Feb 18 | Mar 4 – Mar 18 | — | Aug 11 – Aug 25 |
| Radish | — | — | Feb 25 – Apr 15 | Sep 22 – Oct 20 |
| Strawberry | — | Mar 4 – Mar 25 | — | — |
| Beets | — | — | Mar 11 – Apr 22 | Aug 25 – Sep 8 |
Nearby cities in North Carolina
- Charlotte — zone 8a, last frost Apr 5, first frost Oct 30
- Concord — zone 8a, last frost Apr 6, first frost Oct 28
- Winston-Salem — zone 8a, last frost Apr 2, first frost Nov 3
- Asheville — zone 7b, last frost Apr 13, first frost Oct 26
- High Point — zone 8a, last frost Apr 5, first frost Oct 31
- Greensboro — zone 8a, last frost Apr 5, first frost Oct 31
More: all North Carolina cities · other zone 8a cities: Charlotte, NC, Memphis, TN, Atlanta, GA, Raleigh, NC, Greensboro, NC, Durham, NC, Winston-Salem, NC, Chesapeake, VA
Gastonia gardening questions
When is the last frost in Gastonia, NC?
Plan around Apr 1. At NOAA's Gastonia, NC station, 2.7 mi from the city center, there is a 30% chance of a 32°F frost after that date. Half of springs have their last frost by Mar 27, and after Apr 9 the risk drops to about 1 in 10. A hard freeze (28°F) usually ends earlier, around Mar 15. The 90% and 10% dates are 31 days apart, close to the 36-day median for cities on this site.
When should I plant tomatoes in Gastonia, NC?
Start seeds indoors Feb 4 – Feb 18 and set transplants outside Apr 8 – Apr 22, once nights stay above 50°F and the soil is near 60°F. That leaves 216 days between the 30% frost dates, enough for most varieties including 80–85-day slicers. More: tomato planting dates by zone.
How long is the growing season in Gastonia?
About 228 days without a 32°F frost in a typical (median) year. In 9 years out of 10 the season lasts at least 207 days, and in 1 year in 10 it runs 252 days or more. In fall there is a 10% chance of frost by Oct 28 and a 30% chance by Nov 3. That ranks 4th longest of 13 North Carolina cities on this site.
When should I plant a fall garden in Gastonia?
Count back from the first fall frost (Nov 3): transplant broccoli Aug 11 – Aug 25; sow kale Aug 25 – Sep 22; sow lettuce Aug 25 – Sep 22; sow radishes Sep 22 – Oct 20. Hardy crops keep growing through light frosts; the median 28°F hard freeze here is Nov 22. How the math works: succession and fall planting.
Did Gastonia's hardiness zone change on the 2023 map?
Yes. Most of Gastonia was zone 7b on the 2012 map and is zone 8a on the 2023 map — half a zone warmer, like about 56% of U.S. ZIP codes. The shift comes from a newer 1991–2020 averaging period plus more weather stations and better mapping; it does not mean last frost comes earlier. Why the 2023 map is warmer.
How does Gastonia compare with Charlotte, NC?
Both are in zone 8a. The typical last spring frost in Gastonia (Apr 1) comes about 4 days earlier than in Charlotte, NC (Apr 5), 20 miles away, and the first fall frost is Nov 3 versus Oct 30. The two cities use different NOAA stations.