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 USDA zone info for Prospect Heights can be reffered to in order to figure out when it's the best time to plant crassula.

Planting Calendar for Crassula

Frost tolerance for crassula:	Not tolerant of frost.
When to plant:	After the last frost.

Since crassula are not cold tolerant you have to wait until after the last frost before you can plant them.

The earliest that you can plant crassula in Prospect Heights is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant crassula and expect a good harvest is probably August. If you wait any later than that and your crassula may not have a chance to fully mature. You can get started a few weeks earlier by starting your crassula indoors.

Last Frost Date

On average all chance of frost has passed is on April 15 in Prospect Heights. It might get as low as -15°F during the coldest months of winter.

Since the USDA zone info for Prospect Heights is not always accurate the actual date of last frost is different every year. Since half of the time in Prospect Heights you get surprised by a frost after April 15 be ready to protect your crassula if you have one of those late frosts.

USDA Zone Info for Prospect Heights

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 Prospect Heights

You may be interested in your other planting guides for Prospect Heights.