Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

You should be able to determine when to plant caladium by using the USDA zone info for San Bernardino.

Planting Calendar for Caladium

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

It's probably a bad idea to plant caladium until after the last frost has passed because they do not do well in cold weather.

The earliest that you can plant caladium in San Bernardino is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant caladium and expect a good harvest is probably September. You probably don't want to wait any later than that or else your caladium may not have a chance to grow to maturity. Starting your caladium indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average all chance of frost has passed is on February 15 in San Bernardino. In the coldest months of winter you can expect an average low temperature of 25°F.

It's important to remember that the actual date of last frost is not always accurate because it is based on the USDA zone info for San Bernardino and it is different every 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 caladium in the event of 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.