Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Joliet you can estimate when it's a good idea to plant crassula by reviewing the USDA zone info.

Planting Calendar for Crassula

Frost tolerance for crassula:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

Crassula require warm weather which tells us that you must wait until it warms up after the last frost before you can plant them.

The earliest that you can plant crassula in Joliet 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. Any later than that and your crassula may not have a chance to grow to maturity. If you are starting your crassula indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Joliet. In the coldest months of winter you can expect an average low temperature of -15°F.

Remember that USDA zone info for Joliet is not always accurate and the actual date of last frost is different every year. Half of the time in Joliet it frosts late in the year after April 15 so make sure that you are prepared to cover your crassula in the event of a late frost.

USDA Zone Info for Joliet

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 Joliet

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