Duxbury, MA planting zone & frost dates
Duxbury is in USDA hardiness zone 7a. The last spring frost usually comes around April 15 and the first fall frost around November 1, for a growing season of about 198 days.
Planting calendar for Duxbury
Dates are counted from the average last spring frost (April 15) 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 18 – Mar 4 Transplant outdoors: Apr 22 – Apr 29 |
| Peppers | Start seeds indoors: Feb 4 – Feb 18 Transplant outdoors: Apr 29 – May 6 |
| Eggplant | Start seeds indoors: Feb 4 – Feb 18 Transplant outdoors: Apr 29 – May 6 |
| Broccoli | Start seeds indoors: Feb 4 – Feb 18 Transplant outdoors: Mar 18 – Apr 1 |
| Cabbage | Start seeds indoors: Feb 4 – Feb 18 Transplant outdoors: Mar 18 – Apr 1 |
| Onions (sets) | Plant outdoors: Mar 18 – Apr 1 |
| Peas | Sow outdoors: Mar 4 – Mar 18 |
| Spinach | Sow outdoors: Mar 4 – Mar 18 |
| Lettuce | Sow outdoors: Mar 18 – Apr 1 |
| Carrots | Sow outdoors: Mar 18 – Apr 1 |
| Potatoes | Plant outdoors: Mar 18 – Apr 1 |
| Beans | Sow outdoors: Apr 22 – Apr 29 |
| Sweet corn | Sow outdoors: Apr 22 – Apr 29 |
| Cucumbers | Sow outdoors: Apr 22 – Apr 29 |
| Squash & zucchini | Sow outdoors: Apr 22 – Apr 29 |
| Basil | Start seeds indoors: Mar 4 – Mar 18 Transplant outdoors: Apr 22 – Apr 29 |
Fall garden: cool-season crops like lettuce, spinach and kale can be sown again around Sep 6 (8 weeks before the average first fall frost on Nov 1).
Useful for zone 7a gardens
- Seed starting kit with dome — to start seeds indoors before the last frost
- LED grow light for seedlings — stops leggy seedlings
- Frost cloth / plant covers — for late spring and early fall frosts
- Soil thermometer — warm-season crops need soil above 60°F
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Frost risk in detail
| 90% chance | 50% chance | 10% chance | |
|---|---|---|---|
| Last 32°F frost in spring is after | Apr 2 | Apr 15 | Apr 28 |
| First 32°F frost in fall is before | Nov 14 | Nov 1 | Oct 17 |
How to read it: in spring there is a 10% chance of a frost after April 28, so that is a safe date for tender plants. In fall there is a 10% chance of frost before October 17. A hard freeze (28°F) usually ends around April 3.
Hardiness zone by ZIP code in Duxbury
- 02331 zone 7a
- 02332 zone 7a
Nearby cities
Questions
What growing zone is Duxbury, MA?
Duxbury is in USDA Plant Hardiness Zone 7a (average extreme winter low 0°F to 5°F), according to the USDA 2023 map.
When is the last frost in Duxbury?
The average last spring frost (32°F) in Duxbury is April 15. There is still a 10% chance of frost until April 28.
When can I plant tomatoes in Duxbury?
Transplant tomatoes outdoors 1–2 weeks after the average last frost: around Apr 22 – Apr 29. Start seeds indoors 6–8 weeks before the last frost.
Frost dates: NOAA U.S. Climate Normals 1991–2020, station Plymouth-Kingston, MA (USC00196486), 6.9 km (4.3 mi) from the city center, elevation 14 m, based on 17 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.