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

In San Bernardino you can estimate when it's possible to plant coral bells by using the USDA zone info.

Planting Calendar for Coral Bells

Frost tolerance for coral bells:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Coral Bells do well in moderate cold which means that you can plant them earlier than more sensitive plants.

The earliest that you can plant coral bells in San Bernardino is January. However, you really should wait until February if you don't want to take any chances.

The last month that you can plant coral bells and expect a good harvest is probably October. You probably don't want to wait any later than that or else your coral bells may not have a chance to grow to maturity. If you are starting your coral bells 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 February 15 in San Bernardino. You can expect an average low temperature of 25°F in the coldest months of winter.

Since the USDA zone info for San Bernardino is just an average the actual date of last frost can change quite a bit from year to year. Half of the time in San Bernardino it frosts late in the year after February 15 so be sure to be ready to cover your coral bells if you have one of those late frosts.

USDA Zone Info for San Bernardino

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°F

This means that on a really cold year, the coldest it will get is 25°F. On most years you should be prepared to experience lows near 30°F.

Plants to Grow in San Bernardino

You may be interested in your other planting guides for San Bernardino.