One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

You should be able to figure out when it's the best time to plant crassula by looking at the USDA zone info for Clarks Summit.

Planting Calendar for Crassula

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

You really shouldn't plant crassula until after the last frost because they are not cold tolerant.

The earliest that you can plant crassula in Clarks Summit 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 really do well. If you are starting your crassula indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Clarks Summit. In the coldest months of winter you should expect an average low temperature of -10°F.

Keep in mind that USDA zone info for Clarks Summit is an average and the actual date of last frost changes from year to year. Half of the time in Clarks Summit there is a last frost after April 15 so be sure to be ready to cover your crassula in the event of one of those late frosts.

USDA Zone Info for Clarks Summit

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-10°F
Highest Expected Low	-5°F

This means that on a really cold year, the coldest it will get is -10°F. On most years you should be prepared to experience lows near -5°F.

Plants to Grow in Clarks Summit

You may be interested in your other planting guides for Clarks Summit.