When to plant sweet potato in Connecticut
Connecticut spans USDA zones 6a–7a, so the right time to plant sweet potato shifts by weeks across the state. The window to transplant seedlings outdoors runs from about April 26 in Bridgeport to May 29 in Torrington — below are local dates for 35 cities, each computed from its own frost dates.
| City | Zone | Last frost | First frost | Transplant out |
|---|---|---|---|---|
| Bridgeport | 7a | April 5 | November 6 | April 26 – May 10 |
| Stamford | 7a | April 17 | October 23 | May 8 – May 22 |
| New Haven | 7a | April 17 | October 27 | May 8 – May 22 |
| Hartford | 6b | April 17 | October 26 | May 8 – May 22 |
| Waterbury | 6b | April 26 | October 16 | May 17 – May 31 |
| Norwalk | 7a | April 17 | October 23 | May 8 – May 22 |
| Danbury | 6b | May 1 | October 14 | May 22 – June 5 |
| New Britain | 6b | April 17 | October 26 | May 8 – May 22 |
Sweet Potato in Connecticut: FAQ
When can I plant sweet potato in Connecticut?
Across Connecticut, the time to transplant sweet potato spans roughly April 26 in Bridgeport to May 29 in Torrington, each following that city's local frost dates.
Does the sweet potato planting date vary across Connecticut?
Yes. Connecticut publishes 35 cities with their own frost dates, so the right sweet potato planting window shifts by weeks between the warmest and coldest parts of the state — use your city's page for the exact dates.
How long does sweet potato take to grow in Connecticut?
Sweet Potato takes about 90–120 days to reach harvest once planted — check that this fits inside your city's frost-free season on its place page.
Never miss a window in your area
An email when it’s time to start seeds, transplant, and sow — timed to your frost dates. Double opt-in, one-click unsubscribe, no spam.