When to plant sunflower in Rhode Island
Rhode Island spans USDA zones 6b–7a, so the right time to plant sunflower shifts by weeks across the state. The window to sow seed directly outdoors runs from about April 7 in Newport to April 22 in Pawtucket — below are local dates for 11 cities, each computed from its own frost dates.
| City | Zone | Last frost | First frost | Direct sow |
|---|---|---|---|---|
| Providence | 7a | April 11 | October 30 | April 11 – May 2 |
| Cranston | 7a | April 11 | October 30 | April 11 – May 2 |
| Warwick | 7a | April 11 | October 30 | April 11 – May 2 |
| Pawtucket | 7a | April 22 | October 19 | April 22 – May 13 |
| East Providence | 7a | April 11 | October 30 | April 11 – May 2 |
| Woonsocket | 6b | April 22 | October 19 | April 22 – May 13 |
| Newport | 7a | April 7 | November 13 | April 7 – April 28 |
| Central Falls | 7a | April 22 | October 19 | April 22 – May 13 |
Sunflower in Rhode Island: FAQ
When can I plant sunflower in Rhode Island?
Across Rhode Island, the time to direct-sow sunflower spans roughly April 7 in Newport to April 22 in Pawtucket, each following that city's local frost dates.
Does the sunflower planting date vary across Rhode Island?
Yes. Rhode Island publishes 11 cities with their own frost dates, so the right sunflower 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 sunflower take to grow in Rhode Island?
Sunflower takes about 70–100 days to reach harvest once planted — check that this fits inside your city's frost-free season on its place page.
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