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 Downers Grove can be estimated 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 can survive in moderate cold which means that you can plant them a little bit earlier in the year than more sensitive plants.

The earliest that you can plant cerastium in Downers Grove 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. 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 Downers Grove. You can expect an average low temperature of -15°F in the coldest months of winter.

It's important to remember that USDA zone info for Downers Grove is just an average and the actual date of last frost can change quite a bit from year to year. Half of the time in Downers Grove you get surprised by a frost after April 15 so be sure to be ready to cover your cerastium if you have one of those late frosts.

USDA Zone Info for Downers Grove

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 Downers Grove

You may be interested in your other planting guides for Downers Grove.