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

The USDA zone info for Hilton Head Island should be reffered to in order to figure out when it's the best time 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 tend to make it in moderate cold which tells us that you can plant them just a bit earlier in the year than other plants that might not handle the cold.

The earliest that you can plant cerastium in Hilton Head Island 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. You probably don't want to wait any later than that or else your cerastium may not have a chance to fully mature. Starting your cerastium indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is March 15 in Hilton Head Island. You can expect an average low temperature of 15°F in the coldest months of winter.

Since the USDA zone info for Hilton Head Island is just an average the actual date of last frost changes from year to year. Half of the time in Hilton Head Island there is a last frost after March 15 so make sure that you are ready to protect your cerastium in the event of a surprise late frost.

USDA Zone Info for Hilton Head Island

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	15°F
Highest Expected Low	20°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 20°F.

Plants to Grow in Hilton Head Island

You may be interested in your other planting guides for Hilton Head Island.