Cinnaminson, NJ planting zone & frost dates
Cinnaminson is in USDA hardiness zone 7b. The last spring frost usually comes around April 15 and the first fall frost around October 31, for a growing season of about 199 days.
Planting calendar for Cinnaminson
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 5 (8 weeks before the average first fall frost on Oct 31).
Useful for zone 7b 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 1 | Apr 15 | May 1 |
| First 32°F frost in fall is before | Nov 12 | Oct 31 | Oct 16 |
How to read it: in spring there is a 10% chance of a frost after May 1, so that is a safe date for tender plants. In fall there is a 10% chance of frost before October 16. A hard freeze (28°F) usually ends around April 1.
Nearby cities
- Moorestown-Lenola zone 7b, last frost Apr 12
- Maple Shade zone 7b, last frost Apr 12
- Cherry Hill Mall zone 7b, last frost Apr 15
- Cherry Hill zone 7b, last frost Apr 15
- Pennsauken zone 7b, last frost Apr 15
- Greentree zone 7b, last frost Apr 12
- Collingswood zone 7b, last frost Apr 15
- Haddonfield zone 7b, last frost Apr 15
Questions
What growing zone is Cinnaminson, NJ?
Cinnaminson is in USDA Plant Hardiness Zone 7b (average extreme winter low 5°F to 10°F), according to the USDA 2023 map.
When is the last frost in Cinnaminson?
The average last spring frost (32°F) in Cinnaminson is April 15. There is still a 10% chance of frost until May 1.
When can I plant tomatoes in Cinnaminson?
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 Pennsauken 1N, NJ (USC00286864), 4.2 km (2.6 mi) from the city center, elevation 14 m, based on 25 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.