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

By checking out the USDA zone info for Princeton you should be able to figure out when it's the best time to plant caladium.

Planting Calendar for Caladium

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

Caladium are not cold tolerant which tells us that you have to wait until it warms up after the last frost before you can plant them.

The earliest that you can plant caladium in Princeton 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 caladium and expect a good harvest is probably August. Any later than that and your caladium may not have a chance to fully mature. If you are starting your caladium indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

In Princeton the average date of last frost happens on April 15. You can expect an average low temperature of -5°F in the coldest months of winter.

Since the USDA zone info for Princeton is just an average the actual date of last frost changes from year to year. Half of the time in Princeton last frost occurs after April 15 so be sure to be ready to protect your caladium in the event of a late frost.

USDA Zone Info for Princeton

Here is the info for USDA Zone 6b.

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

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

Plants to Grow in Princeton

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