Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The first chance to plant cerastium in Algonquin can be figured out by using the USDA zone info.

Planting Calendar for Cerastium

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

Cerastium do well in moderate cold which means that you can start planting them earlier than more sensitive plants.

The earliest that you can plant cerastium in Algonquin 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 grow to maturity. You can get started a few weeks earlier by starting your cerastium indoors.

Last Frost Date

On average the last frost is on April 15 in Algonquin. It might get as low as -15°F during the coldest months of winter.

Since the USDA zone info for Algonquin may not be accurate from year to year the actual date of last frost will vary from year to year. Since half of the time in Algonquin it frosts late in the year after April 15 be ready to protect your cerastium if you have a late frost.

USDA Zone Info for Algonquin

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 Algonquin

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