The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In Ambler you can estimate when it's the best time to plant crassula by checking out the USDA zone info.

Planting Calendar for Crassula

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

Since crassula do not do well in cold weather you must wait until after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant crassula in Ambler 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. You probably don't want to wait any later than that or else your crassula may not have a chance to fully mature. Starting your crassula indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Ambler. You can expect an average low temperature of 0°F in the coldest months of winter.

Since the USDA zone info for Ambler is an average the actual date of last frost can change quite a bit from year to year. Since half of the time in Ambler you get surprised by a frost after April 15 be ready to cover your crassula in the event of a surprise late frost.

USDA Zone Info for Ambler

Here is the info for USDA Zone 7a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	0°F
Highest Expected Low	5°F

This means that on a really cold year, the coldest it will get is 0°F. On most years you should be prepared to experience lows near 5°F.

Plants to Grow in Ambler

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