The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

By looking at the USDA zone info for Harrington Park you will be able to estimate when it's a good idea to plant cerastium.

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 tells us that you can plant them earlier than other frost tender plants.

The earliest that you can plant cerastium in Harrington Park 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 fully mature. Starting your cerastium indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

On average all chance of frost has passed is on April 15 in Harrington Park. In the coldest months of winter you can expect an average low temperature of 0°F.

Since the USDA zone info for Harrington Park may not be accurate from year to year the actual date of last frost will vary from year to year. Half of the time in Harrington Park you get surprised by a frost after April 15 so just be sure to be ready to cover your cerastium in the event of one of those late frosts.

USDA Zone Info for Harrington Park

Here is the info for USDA Zone 7a.

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.

Plants to Grow in Harrington Park

You may be interested in your other planting guides for Harrington Park.