Coventry, RI planting zone & frost dates
Coventry is in USDA hardiness zone 6b. The last spring frost usually comes around April 22 and the first fall frost around October 20, for a growing season of about 179 days.
Planting calendar for Coventry
Dates are counted from the average last spring frost (April 22) using the typical timing recommended by U.S. extension services. Warm-season crops go out only after the danger of frost has passed and the soil has warmed.
| Crop | When |
|---|---|
| Tomatoes | Start seeds indoors: Feb 25 – Mar 11 Transplant outdoors: Apr 29 – May 6 |
| Peppers | Start seeds indoors: Feb 11 – Feb 25 Transplant outdoors: May 6 – May 13 |
| Eggplant | Start seeds indoors: Feb 11 – Feb 25 Transplant outdoors: May 6 – May 13 |
| Broccoli | Start seeds indoors: Feb 11 – Feb 25 Transplant outdoors: Mar 25 – Apr 8 |
| Cabbage | Start seeds indoors: Feb 11 – Feb 25 Transplant outdoors: Mar 25 – Apr 8 |
| Onions (sets) | Plant outdoors: Mar 25 – Apr 8 |
| Peas | Sow outdoors: Mar 11 – Mar 25 |
| Spinach | Sow outdoors: Mar 11 – Mar 25 |
| Lettuce | Sow outdoors: Mar 25 – Apr 8 |
| Carrots | Sow outdoors: Mar 25 – Apr 8 |
| Potatoes | Plant outdoors: Mar 25 – Apr 8 |
| Beans | Sow outdoors: Apr 29 – May 6 |
| Sweet corn | Sow outdoors: Apr 29 – May 6 |
| Cucumbers | Sow outdoors: Apr 29 – May 6 |
| Squash & zucchini | Sow outdoors: Apr 29 – May 6 |
| Basil | Start seeds indoors: Mar 11 – Mar 25 Transplant outdoors: Apr 29 – May 6 |
Fall garden: cool-season crops like lettuce, spinach and kale can be sown again around Aug 25 (8 weeks before the average first fall frost on Oct 20).
Frost risk in detail
| 90% chance | 50% chance | 10% chance | |
|---|---|---|---|
| Last 32°F frost in spring is after | Apr 10 | Apr 22 | May 4 |
| First 32°F frost in fall is before | Nov 4 | Oct 20 | Oct 5 |
How to read it: in spring there is a 10% chance of a frost after May 4, so that is a safe date for tender plants. In fall there is a 10% chance of frost before October 5. A hard freeze (28°F) usually ends around April 10.
Hardiness zone by ZIP code in Coventry
- 02816 zone 6b
Nearby cities
- West Warwick zone 6b, last frost Apr 22
- North Scituate zone 6b, last frost Apr 25
- Johnston zone 6b, last frost Apr 11
- East Greenwich zone 7a, last frost Apr 11
- Cranston zone 7a, last frost Apr 11
- Smithfield zone 6b, last frost Apr 22
- North Kingstown zone 7a, last frost Apr 27
- North Providence zone 6b, last frost Apr 11
Questions
What growing zone is Coventry, RI?
Coventry is in USDA Plant Hardiness Zone 6b (average extreme winter low -5°F to 0°F), according to the USDA 2023 map.
When is the last frost in Coventry?
The average last spring frost (32°F) in Coventry is April 22. There is still a 10% chance of frost until May 4.
When can I plant tomatoes in Coventry?
Transplant tomatoes outdoors 1–2 weeks after the average last frost: around Apr 29 – May 6. Start seeds indoors 6–8 weeks before the last frost.
Frost dates: NOAA U.S. Climate Normals 1991–2020, station Coventry 2, RI (USC00371875), 11.0 km (6.8 mi) from the city center, elevation 85 m, based on 4 years of records. Hardiness zone: USDA Plant Hardiness Zone Map 2023 for the ZIP code nearest to the city center. Microclimates (valleys, hills, cities, coasts) can be warmer or colder: check the local forecast before planting. How we calculate the data.