When to plant sweet corn in North Carolina
North Carolina’s average last spring frost is April 5, and the first fall frost typically arrives around October 25 — about 203 frost-free days (USDA zones 5b, 6a, 6b, 7a, 7b, 8a, 8b). Sweet Corn needs 60–100 days to mature, which fits comfortably within North Carolina's growing season.
North Carolina covers a wide range of climates, so your exact frost dates may differ from the state average by two weeks or more. For dates tuned to your town, use the calendar generator.
When to plant sweet corn in North Carolina: the short answer
For a spring planting, sow Apr 7 – Apr 26. Wait until the soil is at least 55°F and frost is over.
Succession sow again in North Carolina: Apr 26 · May 10 · May 24 · Jun 7 · Jun 21 · Jul 5 · Jul 19 · Aug 2
Windows are ~1–2 week bands around each date. Frost dates are a statewide average from NOAA/NCEI normals; your town may differ by two weeks or more. Calendar year 2026.
How to grow sweet corn in North Carolina, step by step
- Prepare the bed. It needs at least six to eight hours of direct sun a day and loose soil at least 24 inches deep, with a pH between 5.8 and 7.0. Dig in compost before planting.
- Sow outdoors (Apr 7 – Apr 26). Space plants about 10 inches apart in rows 30 inches apart, sowing seed 1.5 inches deep. It is killed by frost, so nothing goes outside until the danger has passed.
- Water and feed. It needs plenty of water; keep the soil evenly moist and never let it dry out.
- Watch for pests and problems. Pests: corn earworm, European corn borer, corn rootworm, raccoons. Diseases and disorders: common smut, common rust, Stewart's wilt.
- Harvest (from about Jun 11 – Jul 21). Sweet Corn takes 60-100 days to reach harvest. Plant in a block of at least 4 short rows, not one long row, or the ears fill unevenly. Keep sugar-enhanced and supersweet types isolated from field corn. Succeed by sowing every 2 weeks or planting early/mid/late varieties together.
Figures come from our crop data; dates use North Carolina’s average frost dates. More in the full sweet corn growing guide.
Sweet Corn planting dates by USDA zone in North Carolina
North Carolina spans USDA zones 5b, 6a, 6b, 7a, 7b, 8a, 8b. Colder zones, usually higher or further inland, have a later last spring frost and an earlier first fall frost than the state average, so the sweet corn dates shift with them.
When to plant sweet corn in nearby states
| State | Last frost | Sow |
|---|---|---|
| North Carolina (this page) | April 5 | Apr 7 – Apr 26 |
| South Carolina | March 25 | Mar 27 – Apr 15 |
| Georgia | March 25 | Mar 27 – Apr 15 |
| Tennessee | April 10 | Apr 12 – May 1 |
| Kentucky | April 18 | Apr 20 – May 9 |
Questions gardeners in North Carolina ask
When is the best time to plant sweet corn in North Carolina?
Sow sweet corn in North Carolina between April 7 and April 26. That timing is set by North Carolina's average last spring frost of April 5; North Carolina spans several climates, so cooler and higher parts of the state run later.
What is the latest I can plant sweet corn in North Carolina?
About August 26. Sweet corn needs at least 60 days to mature, and frost around October 25 ends the season, so later plantings risk being cut short.
When will sweet corn planted in North Carolina be ready to harvest?
Planted on time, sweet corn is usually ready from about June 11 to July 21, 60-100 days after sowing.
When is the last frost in North Carolina?
On average around April 5, with the first fall frost around October 25 - about 203 frost-free days. Your town may differ by two weeks or more.