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 Napa you can figure out when you can plant caladium by looking at the USDA zone info.

Planting Calendar for Caladium

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

Caladium require warm weather which means that it's necessary to wait until it warms up after the last frost before you can plant them.

The earliest that you can plant caladium in Napa 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 fully mature. Starting your caladium indoors is a great way to get them started a little bit earlier.

Last Frost Date

On average all chance of frost has passed is on February 15 in Napa. You should expect an average low temperature of 25°F in the coldest months of winter.

Since the USDA zone info for Napa may not be accurate from year to year the actual date of last frost will vary from year to year. Since half of the time in Napa last frost occurs after February 15 be ready to protect your caladium in the event of a late frost.

USDA Zone Info for Napa

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 Napa

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