Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

You should be able to figure out when it's possible to plant cerastium by checking out the USDA zone info for Westchester.

Planting Calendar for Cerastium

Frost tolerance for cerastium:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Cerastium are moderately cold tolerant which means that you can get them planted earlier than plants that are more sensitive to the cold.

The earliest that you can plant cerastium in Westchester is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant cerastium and expect a good harvest is probably September. Any later than that and your cerastium may not have a chance to really do well. You can get started a few weeks earlier by starting your cerastium indoors.

Last Frost Date

The average date of last frost is April 15 in Westchester. It might get as low as -15°F during the coldest months of winter.

Keep in mind that USDA zone info for Westchester is an average and the actual date of last frost can change quite a bit from year to year. Since half of the time in Westchester you get a frost after April 15 be ready to cover your cerastium if you have a late frost.

USDA Zone Info for Westchester

Here is the info for USDA Zone 5b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-15°F
Highest Expected Low	-10°F

This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.

Plants to Grow in Westchester

You may be interested in your other planting guides for Westchester.