When to plant carrots in Connecticut
Connecticut’s average last spring frost is April 25, and the first fall frost typically arrives around October 15 — about 173 frost-free days (USDA zones 5b, 6a, 6b, 7a). Carrot needs 60–80 days to mature, which fits comfortably within Connecticut's growing season.
When to plant carrots in Connecticut: the short answer
For a spring planting, sow Mar 30 – Apr 18. Seeds germinate in soil from 40 to 85°F.
Succession sow again in Connecticut: Apr 22 · May 10 · May 28
Spring succession stops before summer heat makes it bolt. Start sowing again in late summer for a fall crop (see the fall window above).
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 carrots in Connecticut, step by step
- Prepare the bed. They need six or more hours of sun for the best growth, though four to six hours in partial shade is enough and loose soil at least 12 inches deep, with a pH between 5.5 and 7.0. Dig in compost before planting.
- Sow outdoors (Mar 30 – Apr 18). Space plants about 3 inches apart in rows 12 inches apart, sowing seed ¼ inch deep. It handles frost well, so it can go out before the last frost date. As a cool-season crop it does best before summer heat arrives in Connecticut.
- Water and feed. Give it steady, even moisture, about an inch of water a week from rain or the hose.
- Watch for pests and problems. Pests: carrot rust fly, wireworm, root-knot nematode, aphids. Diseases and disorders: alternaria leaf blight, cavity spot, aster yellows.
- Harvest (from about Jun 3 – Jun 23). Carrot takes 60-80 days to reach harvest. Never transplant. Keep the surface constantly moist for the slow 2-3 week germination - a board or burlap over the row helps. Needs loose, stone-free soil or roots fork.
Figures come from our crop data; dates use Connecticut’s average frost dates. More in the full carrot growing guide.
Carrot planting dates by USDA zone in Connecticut
Connecticut spans USDA zones 5b, 6a, 6b, 7a. 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 carrot dates shift with them.
When to plant carrots in nearby states
| State | Last frost | Sow |
|---|---|---|
| Connecticut (this page) | April 25 | Mar 30 – Apr 18 |
| Maine | May 14 | Apr 18 – May 7 |
| New Hampshire | May 13 | Apr 17 – May 6 |
| Vermont | May 14 | Apr 18 – May 7 |
| Massachusetts | April 24 | Mar 29 – Apr 17 |
| Rhode Island | April 25 | Mar 30 – Apr 18 |
| New York | May 1 | Apr 5 – Apr 24 |
Questions gardeners in Connecticut ask
When is the best time to plant carrots in Connecticut?
Sow carrots in Connecticut between March 30 and April 18. That timing is set by Connecticut's average last spring frost of April 25.
Can I plant carrots in the fall in Connecticut?
Yes. For a fall crop, sow between July 20 and August 6, so the crop matures in cool weather before Connecticut's first frost around October 15.
When will carrots planted in Connecticut be ready to harvest?
Planted on time, carrots are usually ready from about June 3 to June 23, 60-80 days after sowing.
When is the last frost in Connecticut?
On average around April 25, with the first fall frost around October 15 - about 173 frost-free days. Your town may differ by two weeks or more.