According to the USDA Yonkers is in USDA Zone 7a. Here is some general info for USDA Zone 7a to help you get started.
Average Date of Last Frost (spring) | April 15 |
Average Date of First Frost (fall) | October 15 |
Lowest Expected Low | 0°F |
Highest Expected Low | 5°F |
This means that on a really cold year, the coldest it will get is 0°F. On most years you should be prepared to experience lows near 5°F.
You can view the USDA Zone map for New York here:
Below is a list of planting guides for Yonkers, NY. These guides are based on data from Zone 7a.
Vegetables
Herbs
Flowers