Yonkers, NY planting zone & frost dates
Yonkers is in USDA hardiness zone 7b. The last spring frost usually comes around April 20 and the first fall frost around October 26, for a growing season of about 189 days.
Planting calendar for Yonkers
Dates are counted from the average last spring frost (April 20) 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 23 – Mar 9 Transplant outdoors: Apr 27 – May 4 |
| Peppers | Start seeds indoors: Feb 9 – Feb 23 Transplant outdoors: May 4 – May 11 |
| Eggplant | Start seeds indoors: Feb 9 – Feb 23 Transplant outdoors: May 4 – May 11 |
| Broccoli | Start seeds indoors: Feb 9 – Feb 23 Transplant outdoors: Mar 23 – Apr 6 |
| Cabbage | Start seeds indoors: Feb 9 – Feb 23 Transplant outdoors: Mar 23 – Apr 6 |
| Onions (sets) | Plant outdoors: Mar 23 – Apr 6 |
| Peas | Sow outdoors: Mar 9 – Mar 23 |
| Spinach | Sow outdoors: Mar 9 – Mar 23 |
| Lettuce | Sow outdoors: Mar 23 – Apr 6 |
| Carrots | Sow outdoors: Mar 23 – Apr 6 |
| Potatoes | Plant outdoors: Mar 23 – Apr 6 |
| Beans | Sow outdoors: Apr 27 – May 4 |
| Sweet corn | Sow outdoors: Apr 27 – May 4 |
| Cucumbers | Sow outdoors: Apr 27 – May 4 |
| Squash & zucchini | Sow outdoors: Apr 27 – May 4 |
| Basil | Start seeds indoors: Mar 9 – Mar 23 Transplant outdoors: Apr 27 – May 4 |
Fall garden: cool-season crops like lettuce, spinach and kale can be sown again around Aug 31 (8 weeks before the average first fall frost on Oct 26).
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 4 | Apr 20 | May 6 |
| First 32°F frost in fall is before | Nov 10 | Oct 26 | Oct 10 |
How to read it: in spring there is a 10% chance of a frost after May 6, so that is a safe date for tender plants. In fall there is a 10% chance of frost before October 10. A hard freeze (28°F) usually ends around April 4.
Hardiness zone by ZIP code in Yonkers
- 10701 zone 7b
- 10702 zone 7b
- 10703 zone 7a
- 10704 zone 7b
- 10705 zone 7b
- 10710 zone 7b
Nearby cities
- Mount Vernon zone 7b, last frost Apr 1
- The Bronx zone 7b, last frost Apr 1
- Dobbs Ferry zone 7a, last frost Apr 20
- Wykagyl zone 7b, last frost Apr 20
- Greenburgh zone 7a, last frost Apr 20
- New Rochelle zone 7b, last frost Apr 1
- Scarsdale zone 7a, last frost Apr 20
- Tarrytown zone 7a, last frost Apr 20
Questions
What growing zone is Yonkers, NY?
Yonkers is in USDA Plant Hardiness Zone 7b (average extreme winter low 5°F to 10°F), according to the USDA 2023 map. Some ZIP codes of the city fall in zone 7a.
When is the last frost in Yonkers?
The average last spring frost (32°F) in Yonkers is April 20. There is still a 10% chance of frost until May 6.
When can I plant tomatoes in Yonkers?
Transplant tomatoes outdoors 1–2 weeks after the average last frost: around Apr 27 – May 4. Start seeds indoors 6–8 weeks before the last frost.
Frost dates: NOAA U.S. Climate Normals 1991–2020, station Dobbs Ferry-Ardsley, NY (USC00302129), 10.1 km (6.3 mi) from the city center, elevation 61 m, based on 20 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.