One of the best tools that you have as gardeners to help us determine 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.

The USDA zone info for Tustin can be looked at to figure out when to plant crassula.

Planting Calendar for Crassula

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

Crassula are not cold tolerant which means that it is important to wait until it warms up after the last frost before you can plant them.

The earliest that you can plant crassula in Tustin 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 crassula and expect a good harvest is probably September. Any later than that and your crassula may not have a chance to fully mature. Starting your crassula indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

On average the last frost is on January 31 in Tustin. You can expect an average low temperature of 30°F in the coldest months of winter.

Remember that USDA zone info for Tustin may not be accurate from year to year and the actual date of last frost can change quite a bit from year to year. Since half of the time in Tustin you get a frost after January 31 be ready to protect your crassula if you have a surprise late frost.

USDA Zone Info for Tustin

Here is the info for USDA Zone 10a.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	30°F
Highest Expected Low	35°F

This means that on a really cold year, the coldest it will get is 30°F. On most years you should be prepared to experience lows near 35°F.

Plants to Grow in Tustin

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